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Just got a griffin powerjolt micro, comes with an ipod cable so you'll have to use your own, but it charges the streak up a treat
Think it was 12 pounds from amazon.
It's designed for iPads, which need 2 amps, it's rated for 2.1 amps. Charged from 30 to 60% in 20 mins while using gps.
Hope that's useful .
Sent from my Dell Streak using XDA App
For battery life is better to charge with low amps and for a long time. I would prefer ,not to use a charger with more than 1A
i got myself te belkin 1A charger. Should work good I guess.
As mentioned in the other thread, both these two work just fine :
https://www.dealextreme.com/p/car-p...cable-charger-set-for-apple-ipad-12-24v-45227
https://www.dealextreme.com/p/car-cigarette-powered-1000ma-usb-adapter-charger-black-dc-12v-40470
$6 or $2 including free shipping worldwide. You'll need the Streak's USB cable to connect it.
Anbuch said:
For battery life is better to charge with low amps and for a long time. I would prefer ,not to use a charger with more than 1A
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Click to collapse
The car charger does not force power into the phone, the phone draws what it needs. Using a power supply with a higher Amp rating means less strain on the charger not more power than is needed going into the phone.
Sorry for my bad English, I guess you do not understand what I mean.
You're right that the car charger with more amps does not force more power into the phone (I do not say that),but if you use a charger with more amps , charging time is less. The battery prefers long time charging with less charging amps. In fact using less charging amps ,the battery allowed to load more power (a little bit ). You can try it by using a USB port of yours computer to charge the battery.
Anbuch said:
Sorry for my bad English, I guess you do not understand what I mean.
You're right that the car charger with more amps does not force more power into the phone (I do not say that),but if you use a charger with more amps , charging time is less. The battery prefers long time charging with less charging amps. In fact using less charging amps ,the battery allowed to load more power (a little bit ). You can try it by using a USB port of yours computer to charge the battery.
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Maybe it's just me, but what you are saying is exactly the same thing.
If the charger isn't forcing more power into the phone, then the charging time will not change. If the battery is receiving less current then what it was designed, such as a low powered USB port, then it would take longer then normal to fully charge. But once the charger puts out the amount of current that the battery will normally draw, the battery will only charge at that rate. Increasing the current beyond that amount will not speed up the charging time or push more current to the battery.
brianlp said:
If the battery is receiving less current then what it was designed, such as a low powered USB port, then it would take longer then normal to fully charge. But once the charger puts out the amount of current that the battery will normally draw, the battery will only charge at that rate. Increasing the current beyond that amount will not speed up the charging time or push more current to the battery.
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Click to collapse
Anbuch is trying to say that the battery will last longer in the first scenario - the longer, slower charge from the low powered USB port.
Quicker battery charging does degrade the cells in less time - if you were to always use a 500mA charger, you would get more life from the battery than if you were to always use the stock 1000mA charger.
You can pick up a replacement battery from eBay for $10, so none of this really matters - when your battery wears out in 18 months, just buy a new one.
Nomgle ,thanks, this is exactly what I wanted to say!
I just gave an example with a USB port. In fact a USB port and a stock 1000mA charger are save enough for the battery of a Streak (1530mA). I just wanted to say : Do not use 2100 mA charger
Flinx78 said:
.... it's rated for 2.1 amps. Charged from 30 to 60% in 20 mins while using gps....
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This will "kill" the battery very soon
Some battery reading:
Understanding lithium-ion
Charging lithium-ion batteries
How to prolong lithium-based batteries
From the last page linked:
[FONT=Arial, Helvetica, sans-serif]Generally speaking, batteries live longer if treated in a gentle manner. High charge voltages, excessive charge rate and extreme load conditions will have a negative effect and shorten the battery life. This also applies to high current rate lithium-ion batteries.
Not only is it better to charge lithium-ion battery at a slower charge rate, high discharge rates also contribute the extra wear and tear.[/FONT]
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.
I use a black&decker converter and it has a usb port already built into it and that works pretty good for me.
Sent from the phone killer of ALL phone's, Dell Streak!
I just wanna ask if is it just OK to use a SAMSUNG CHAMP DUOS charger on a NOTE? Same with using a NOKIA E72 MICRO USB CABLE for PC CONNECTIVITY on a NOTE? Because when I tried it both are working fine. I am just worried that my NOTE will get damaged. I prefer DUOS' charger because it's longer same with the NOKIA E72 MICRO USB CABLE.
Thanks a lot!
Whatever charger you are make sure it should nor exceed the specification recommended by the manufacturer. For galaxy note we can use 1000 mah 5V rated output of any brand. I think we can go upto 1200 mah but this is completely at your own risk. Beyond this specifications physical damages may occur depending the exceed of limitations.
I am using HTC's charger of same specifications.
Sent from my GT-N7000 using xda premium
I been using Samsung DUOS charger for couple of months. So far ok. Although, I am curious about those charger with 2Amp output. Supposingly charged faster but so sure whether will cause damaged to the Note.
It depends on the type of your charger.
The amperage only says how much electricity the charger is able to produce. If it's a fairly new charger, it'll give only as much as the device connected to it will take - and your phone won't take more than it can handle.
Any charger with usb output and proper voltage will work, unless it's amperage is below the minimum required by the phone.
The KERNEL controls the charging current.
If you are using the stock kernel, the Note only gets max. 1000mA (AC-Charging) independent of the used charger.
Charging with a 1200mA-Charger (used a Nokia) wouldn't change the charging time due to the limitation.
As long as the charger obeys the USB-specifications, you shouldn't hurt your Note no matter of USB or AC.
Regards
battery charging takes three things:
a) a charging source (your USB or car "charger")
b) a charge controller (inside the device)
c) a battery
* A fixed voltage charging source cannot push current into a device, it has a current capability.
* A battery will only accept the current that it desires to charge to its full state.
* The terminal voltage of a battery for full charge is determined by its chemistry.
* Control of charging profile and current limiting is done by a charge controller...
The microUSB connections are rated at 1A max, the charge controller will limit the charge current to this...hence the comment by Thor, and there is no downside to plugging in a charging source that has a 2A capability...just dont assume you are getting 2A out of it
safilo said:
I been using Samsung DUOS charger for couple of months. So far ok. Although, I am curious about those charger with 2Amp output. Supposingly charged faster but so sure whether will cause damaged to the Note.
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Am Confused..you guys pointing that whatever the amperage is supplied to our device, it consume (charge rate per hour) only what it has been designed?????
If so why am I getting faster charge time when I use my car charger??? My car charger rating is 1250mah..if I employ my car charger my phone gets full charge in less than 2 hrs from single digit battery % left!!! How is this happening??
Upto my knowledge 1 amp of current will take 1hr to charge 1 amp rating battery. Here our device is 2.5amp so it takes 2.5 hrs for full charge by 1amp supplied current. If amperage rating increased duration will be reduced. Normally kernels controls overcharging...but does it controls amperage rating?? I don't think so.
Sent from my GT-N7000 using xda premium
thor2001 said:
Charging with a 1200mA-Charger (used a Nokia) wouldn't change the charging time due to the limitation.
Click to expand...
Click to collapse
Then why am I getting faster charge with a car charger??
Sent from my GT-N7000 using xda premium
I think you will find that the car charger is not of such as table voltage as the mains supply. Generally car voltages can vary from about 13 Volts to 15 Volts (with the engine running). I am not sure that the car charger regulates this very well (I have seen the same with other devices). If so, it may well be providing more than 5 Volts.
In this case, that is the only way you could possibly damage the battery. I do not believe the Note itself would be damaged. I also do not think it would be noticeable over a short time, but only over a long time.
that is not how charging works...
a) charge acceptance in a battery is non-linear
b) amps*time is not equal to stored charge Ahr.. that would assume 100% efficiency.. and such is not the case. (that would assume zero internal resistance and so a battery would not get even warm if it was 100% efficient at converting incoming charge current to stored charge).
c) your car charger may or may not have a higher current capability than a desk charger.. my samsung charger charges at 750mA max.. my high output charger charges at 925mA max so one charger charges faster than another...
d) If by some lack or variation in calibration you are constantly able to charge at higher currents than the contacts are rated for, expect issues with the microUSB contacts over time..
There is a good reason why every manufacturer specifies and only warrants their devices to be used with their companion chargers.
You certainly dont need to take my word for any of this, the web is there for you to do your own research.
priyanv said:
Am Confused..you guys pointing that whatever the amperage is supplied to our device, it consume (charge rate per hour) only what it has been designed?????
If so why am I getting faster charge time when I use my car charger??? My car charger rating is 1250mah..if I employ my car charger my phone gets full charge in less than 2 hrs from single digit battery % left!!! How is this happening??
Upto my knowledge 1 amp of current will take 1hr to charge 1 amp rating battery. Here our device is 2.5amp so it takes 2.5 hrs for full charge by 1amp supplied current. If amperage rating increased duration will be reduced. Normally kernels controls overcharging...but does it controls amperage rating?? I don't think so.
Sent from my GT-N7000 using xda premium
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Click to collapse
jeromepearce said:
If so, it may well be providing more than 5 Volts.
In this case, that is the only way you could possibly damage the battery.
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Click to collapse
Regarding voltage I checked with a multimeter (a good professional one) it shows around 4.937- 4.982 V. And yes I know that this type of charging would affect battery.. But it's less expensive than the device so I didn't care.
Sent from my GT-N7000 using xda premium
Mystic38 said:
that is not how charging works...
a) charge acceptance in a battery is non-linear
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Click to collapse
Thanks for re calling my studies at school..now I remember I learnt this year's back..
But still I need further more clarification..
I wonder when I use my device hardly battery doesn't get hot at all.. Only the above portion were the camera rest get hot so is this means efficiency of battery is good and that heat us produced because of processor and other functioning parts? Whereas my older device's battery gets heated when I use heavy. Did I Get right?
Sent from my GT-N7000 using xda premium
Last nite, I played dead trigger until battery warning indicated 4%.
But I still keep playing and suddenly the screen went black.
I think the battery is totally dried out at that time. So I used the following
charger but failed to charge even after 10min. Here's the charger:
1. 3rd party 5V 3A charger,liteon brand.
2. old nokia 0.5A charger.
3. original samsung note2 charger.
all those 3 charger works normall on my n10 before last nite.
and suddenly i think maybe i can try out the original charger of n10.
And it works!
So i wonder if samsung or google put special charger on the adapter?
Before we know anything furthur.pls put ur n10 charger in safe place.
I think most tablet chargers output a voltage of 12v. That might of kicked your battery back to life.
xxKamikazexx said:
I think most tablet chargers output a voltage of 12v. That might of kicked your battery back to life.
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I've confirm the voltage of my n10 adapter. Which printed "5V 2A".
It probably just needed a certain amount of minimum battery voltage to function and show charging. I doubt if the OEM power supply is special in any way. The charging circuit is really inside the N10.
wptski said:
It probably just needed a certain amount of minimum battery voltage to function and show charging. I doubt if the OEM power supply is special in any way. The charging circuit is really inside the N10.
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when i plug in the non-n10 charger, even after 10min,n10 is not able to boot. Only flaahing the battery charging symbol for 1 sec.
when i plug in the original charger, n10 can be boot instantly.
thats why i think it is very weird about the original charger. but other chargers still works well when n10 battery is NOT completely dried out.
matika said:
when i plug in the non-n10 charger, even after 10min,n10 is not able to boot. Only flaahing the battery charging symbol for 1 sec.
when i plug in the original charger, n10 can be boot instantly.
thats why i think it is very weird about the original charger. but other chargers still works well when n10 battery is NOT completely dried out.
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Click to collapse
Yeah, that is very strange indeed. It does draw in the 1800mA range from the battery during boot up. Are you using the same micro-USB cord all the time? It was reported that there are big differences in charging rate with different brands of cords.
This was covered in another thread recently.
Basicially the Samsung chargers have 2 pins shorted together to get full charging power of around 1.5A with the n10. Using other chargers will get you around 500ma output.
My guess is if you left your tablet on the "other" chargers overnight it would come on just fine. They simply don't output enough juice to power the tablet when the battery is that low.
matika said:
when i plug in the non-n10 charger, even after 10min,n10 is not able to boot. Only flaahing the battery charging symbol for 1 sec.
when i plug in the original charger, n10 can be boot instantly.
thats why i think it is very weird about the original charger. but other chargers still works well when n10 battery is NOT completely dried out.
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Click to collapse
Had you left the other chargers on long enough, the tablet would have booted fine. I've run into this. I have an old(er) Samsung Tab 2 10.1 charger I use with my N10 (now along with a Pogo cable) and my N10 charges rapidly. That, coupled with the two wires shorted out in Samy's setup for the larger amp's.....also, in my job, I work with other chargers all the time and use them all the time across multi platforms, to include my N10, and it charges fine (albeit much more slowly).
swany6mm said:
Had you left the other chargers on long enough, the tablet would have booted fine. I've run into this. I have an old(er) Samsung Tab 2 10.1 charger I use with my N10 (now along with a Pogo cable) and my N10 charges rapidly. That, coupled with the two wires shorted out in Samy's setup for the larger amp's.....also, in my job, I work with other chargers all the time and use them all the time across multi platforms, to include my N10, and it charges fine (albeit much more slowly).
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My charger(PS) for my Dell Streak 7 works just fine with the N10. This all makes sense except for the fact that the poster stated using a: 3rd party 5V 3A charger,liteon brand which didn't work.
wptski said:
My charger(PS) for my Dell Streak 7 works just fine with the N10. This all makes sense except for the fact that the poster stated using a: 3rd party 5V 3A charger,liteon brand which didn't work.
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Click to collapse
Should still work fine. Voltage is the same and the device will only draw as much amperage as needed. May have something to do with the circuitry in the charger? It may have been bad. As long as you don't supply more volts you are OK. More amps is also OK. Not enough amps will lead to burning up the charger unless the device is smart enough to realize its on a low amp charger (like the n10) and kick down so as not to over draw (ie - over drawing from the USB port which is a .5amp (500mAmp) or 1amp (1000mAmp)...someone correct me on the number here please)
The whole reason manufacturers tell you not to use someone else's charger is so you don't plug in, say, a 12 volt charger into a 5 volt item. That would pop something. That or some cheap charger poorly built could allow "dirty" power through causing problems. Both issues voiding warranties
Not sure if it's been mentioned, but depending on the usage of the tablet, you might not be able to charge it quicker than the power usage. For me, if I'm playing a demanding game at 1.7Ghz and max brightness, neither USB or Pogo can charge the tablet, and battery still drops (slower, but still drops).
swany6mm said:
Should still work fine. Voltage is the same and the device will only draw as much amperage as needed. May have something to do with the circuitry in the charger? It may have been bad. As long as you don't supply more volts you are OK. More amps is also OK. Not enough amps will lead to burning up the charger unless the device is smart enough to realize its on a low amp charger (like the n10) and kick down so as not to over draw (ie - over drawing from the USB port which is a .5amp (500mAmp) or 1amp (1000mAmp)...someone correct me on the number here please)
The whole reason manufacturers tell you not to use someone else's charger is so you don't plug in, say, a 12 volt charger into a 5 volt item. That would pop something. That or some cheap charger poorly built could allow "dirty" power through causing problems. Both issues voiding warranties
Click to expand...
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Never seen anything burn up because of low amperage., power or watts generate heat and power(watts)=voltage x current.
Did you ever see a PS(charger is inside the N10) with a USB port that supplies anything but 5V? I haven't.
Current (amps) does the charging.
No USB charger will provide anything more than 5.1 volts. If the charging block has a USB plug look at the rating. Amperage for smaller devices may be 1a or even less. Newer big smartphones have bigger batteries and need more current to charge. My old Thunderbolt charger is 1A, the charger Motorola provides for my Maxx HD is 1.5A, the Samsung charger for my Galaxy Tab 2 7.0 is a 2 amp charger, so is the charger for the iPad that some frickin' jerk ripped off from my house. The Xoom escaped that problem by having a separate charge plug, not using the USB system, it 12 volts at 1.5 amps. See the pattern? A tablet of any kind has an even bigger battery and needs even more current to charge. The reason the N10 may lose charge even when plugged in is that the charger can't deliver the current needed to run the device and charge the battery simultaneously.
As I see it, Samsung and Google need to supply a slightly higher amperage power block to compensate for the use/charge balance problem. Our solution would be to turn it off and charge the device every night or even leave it plugged in when not in use.
Another thing is the surface area for current transfer. The USB points are tiny, the POGO Pins, dedicated to charging would be able to handle more current because they have more surface area.
Any one who knows better may correct me, I just ordered an N10 today from Google so my information here is what I have read here and what I know from years in the electronics field..
ongre12 said:
No USB charger will provide anything more than 5.1 volts. If the charging block has a USB plug look at the rating. Amperage for smaller devices may be 1a or even less. Newer big smartphones have bigger batteries and need more current to charge. My old Thunderbolt charger is 1A, the charger Motorola provides for my Maxx HD is 1.5A, the Samsung charger for my Galaxy Tab 2 7.0 is a 2 amp charger, so is the charger for the iPad that some frickin' jerk ripped off from my house. The Xoom escaped that problem by having a separate charge plug, not using the USB system, it 12 volts at 1.5 amps. See the pattern? A tablet of any kind has an even bigger battery and needs even more current to charge. The reason the N10 may lose charge even when plugged in is that the charger can't deliver the current needed to run the device and charge the battery simultaneously.
As I see it, Samsung and Google need to supply a slightly higher amperage power block to compensate for the use/charge balance problem. Our solution would be to turn it off and charge the device every night or even leave it plugged in when not in use.
Another thing is the surface area for current transfer. The USB points are tiny, the POGO Pins, dedicated to charging would be able to handle more current because they have more surface area.
Any one who knows better may correct me, I just ordered an N10 today from Google so my information here is what I have read here and what I know from years in the electronics field..
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Click to collapse
You don't need more current to charge a bigger battery, it's all about how long it will take to charge to full.
Some have stated that they've seen a 3A battery drain with certain games. The 9Ah battery would last approx. 3 hours which exceeds the max rate of the charging circuit and the PS. Even on a fully charged battery at that rate doesn't last that long.
AFAIK for any tablet to be able to draw 2A from any 5V charger (that can supply the needed amperage) the data pins (middle two pins from the use cable) have to be at 2.5V. Otherwise even if the charger is with correct specifications 5V/2A the tablet might not charge at all, or charge at a lower rate.
Sent from my Nexus 10 using Tapatalk HD
I forget the actual brand/model of the actual charging chip but if you poke around in the N10 files you can find it but it's specs are list as 2.5A max but N10's code limits it to 2.1A. This isn't the PS wall wart commonly called the "charger".
The recommended charging current for any lithium ion or lithium polymer is 0.7C. What that actually means is a current 0.7 x max capacity in mAh. For most phones e.g. my Galaxy Note 2 with a capacity of 3100 mAh this means a current at about 1.7A.
The battery Nexus 10, on the other hand, could very well be charged at a whooping 6.3A current.
In USB Battery Charging Specification 1.2 the maximum current a USB port can supply for charging purposes can be as high as 5A.
With the Perseus kernel for Note 2 you can actually specify the max limit for how much current the phone will draw from any charger.
So in theory.. it should be possible to charge the Nexus 10 with a 5V 5-6,3A charger.. and that would probably be very quick!
For the record: I havn't seen many (any?) chargers with more that 2.3A
MartiniGM said:
The recommended charging current for any lithium ion or lithium polymer is 0.7C. What that actually means is a current 0.7 x max capacity in mAh. For most phones e.g. my Galaxy Note 2 with a capacity of 3100 mAh this means a current at about 1.7A.
The battery Nexus 10, on the other hand, could very well be charged at a whooping 6.3A current.
In USB Battery Charging Specification 1.2 the maximum current a USB port can supply for charging purposes can be as high as 5A.
With the Perseus kernel for Note 2 you can actually specify the max limit for how much current the phone will draw from any charger.
So in theory.. it should be possible to charge the Nexus 10 with a 5V 5-6,3A charger.. and that would probably be very quick!
For the record: I havn't seen many (any?) chargers with more that 2.3A
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Click to collapse
Sure the charging rate is way under what it should be but as they use larger and larger capacity cells the only solution is a removable cell to charge by other means.
After looking up a bit on USB car chargers, many people seem to recommend the Scosche Dual USB Car Charger (reVOLT 12W + 12W). Each USB port outputs 2.4A of power to charge any device (there's a known issue with this charger for some non Apple devices, you should use charge-only USB for those), but our HTC One stock charger outputs only 1A.
I am afraid a fast car charger like this one will easily overheat my battery, charging it much faster than usual and degrading its lifespan. Should I worry about this or can I order this charger and not worry about it?
I'm confused because a lot of people recommend car chargers like this one (with more output power than what the stock charger of your device gives you) and no review mentions the issue I'm raising here. Is this a non-issue?
Would appreciate more information on this topic from more knowledgeable people in this area.
Nazgulled said:
After looking up a bit on USB car chargers, many people seem to recommend the Scosche Dual USB Car Charger (reVOLT 12W + 12W). Each USB port outputs 2.4A of power to charge any device (there's a known issue with this charger for some non Apple devices, you should use charge-only USB for those), but our HTC One stock charger outputs only 1A.
I am afraid a fast car charger like this one will easily overheat my battery, charging it much faster than usual and degrading its lifespan. Should I worry about this or can I order this charger and not worry about it?
I'm confused because a lot of people recommend car chargers like this one (with more output power than what the stock charger of your device gives you) and no review mentions the issue I'm raising here. Is this a non-issue?
Would appreciate more information on this topic from more knowledgeable people in this area.
Click to expand...
Click to collapse
I'm no expert here but it is my understanding that the phone will take what it requires to charge no matter if you have a 1A or a 2A charger meaning that you will be wasting the power delivered by the charger. I don't think it will affect the battery nor will make it charge faster as I think the internal logic of the phone would not permit so. It could also be the case that HTC limited the power output on the charger but not on the phone meaning that in this case it will charge faster, and I think degrading battery life. Anyway, if you have someone with a higher amp charger you can test this yourself by measuring the time it takes to fully charge with the original charger and the other one. It will not really have an impact in battery life if you just try.
I guess I didn't respond to your question actually! Sorry
Thanks anyway
But if anyone knows the answer for a fact, please pitch in...
J_M_V_S said:
I'm no expert here but it is my understanding that the phone will take what it requires to charge no matter if you have a 1A or a 2A charger meaning that you will be wasting the power delivered by the charger. I don't think it will affect the battery nor will make it charge faster as I think the internal logic of the phone would not permit so. It could also be the case that HTC limited the power output on the charger but not on the phone meaning that in this case it will charge faster, and I think degrading battery life. Anyway, if you have someone with a higher amp charger you can test this yourself by measuring the time it takes to fully charge with the original charger and the other one. It will not really have an impact in battery life if you just try.
I guess I didn't respond to your question actually! Sorry
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You definitely aren't expert, neither am I, but there are couple things:
You were right about that, that device should pull only as much as it needs.
But he won't waste power (in ideal world). As the phone pulls only 1A from 1A or from 2A charger, he still be pulling 5Vx1A = 5W.
Now, to the original question.
Basically every device pulls as much as it can / needs. The Amps on charger says about how much can it deliver maximum.
The question is, how is constructed htc charging circuit. Whether it relays on maximum from charger, or it has internal limitor..
I will try to make an example to make it clearer:
Imagine, that you have a tube made of glass and a reservoir full of water. Tube is your phone and reservoir is charger.
Now, 2 situations can ocur:
1, Tube is made of very thin glass and it relays, that there won;'t be bigger pressure (more water) in reservoir. If there would be more, tube would crack.
2, Although tube is made of thin glass, it has some mechanism included, let's say pressure regulator on the beginning to reduce the pressure.
Now the question is, which of these cases is our phone about.
In short, the HTC One will pull only 1A out of your charger, regardless of whether it's 2A or 100A. The only way you can make it pull more than 1A is by installing a custom kernel like ElementalX or Bulletproof and ticking on 'Enable USB fast charge' which is disabled by default because it shortens the battery's life.
remusator said:
You definitely aren't expert, neither am I, but there are couple things:
You were right about that, that device should pull only as much as it needs.
But he won't waste power (in ideal world). As the phone pulls only 1A from 1A or from 2A charger, he still be pulling 5Vx1A = 5W.
Click to expand...
Click to collapse
What I meant to say is that it would be wasting a 2A charger whilst the phone only seems to require 1A, not meaning that the charger will still be delivering at maximum capacity (2A).
Guess none of us could answer his question as we still don't know how the phone handles the charge.
Subjective answer from an anonymous noob, but I charge my phone with a 2.1A wall charger (built into a power board) and there's no perceptible change in charge rate. I've also used a cheap portible charger, a lithium 800mA, and that battery gets HOT like my m7 is pulling 1A just because it detects it's not limited to usbs 500mA (the power dialog reports AC charging mode).
So it seems to me to be a simple 2 mode as shown as a status in the power dialog, either usb or AC. But, I haven't actually measured or tested anything; this is all just casual observation and assumption.
Can I blow up my USB device?
There is a huge variance, then, between normal USB 2.0 ports rated at 500mA and dedicated charging ports which range all the way up to 2100mA. This leads to a rather important question: If you take a smartphone which came with a 1A wall charger, and plug it into a 2A iPad charger, will it blow up?
In short, no: You can plug any USB device into any USB cable and into any USB port, and nothing will blow up — and in fact, using a more powerful charger should speed up battery charging.
The longer answer is that the age of your device plays an important role, dictating both how fast it can be charged, and whether it can be charged using a wall charger at all. In 2007, the USB Implementers Forum released the Battery Charging Specification, which standardized faster ways of charging USB devices, either by pumping more amps through your PC’s USB ports, or by using a wall charger. Shortly thereafter, USB devices that implemented this spec started to arrive.
Fast forward to 2013 and the HTC One. It is equipped with a USB 2.0 port and when no data is transferred it will accept a charge up to 1A with a minimal standard of 500mA. When you buy a charger that says 2A output, this normally means a max of 2A for the charger. When it comes to charging the phone, the phone will only pull enough power it can from the charger and not more.
@Nazgulled
Now a days Car charger is so essential for us. But when we chose A Car charger for our device its not match, so it s harmful for us & its some time cases to damage our device.
Most of the time The power out put of the car its 12V or 24V. and The Charger give different out put for different device. And its a major thing about the charger whats Ampere given output. Avantek Car charger give us different option ; I think its give different out for our device. Avantek take also help auto adjust to the device. So its protect the device.
I Use Avantek Car Charger for my family & You can also try it for your device.
Nazgulled said:
After looking up a bit on USB car chargers, many people seem to recommend the Scosche Dual USB Car Charger (reVOLT 12W + 12W). Each USB port outputs 2.4A of power to charge any device (there's a known issue with this charger for some non Apple devices, you should use charge-only USB for those), but our HTC One stock charger outputs only 1A.
I am afraid a fast car charger like this one will easily overheat my battery, charging it much faster than usual and degrading its lifespan. Should I worry about this or can I order this charger and not worry about it?
I'm confused because a lot of people recommend car chargers like this one (with more output power than what the stock charger of your device gives you) and no review mentions the issue I'm raising here. Is this a non-issue?
Would appreciate more information on this topic from more knowledgeable people in this area.
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Yes, fast usb car chargers may harm your device. Because if device get power more than its capacity then it would be definitely harm your costly devices. So please purchase a perfect and valuable charger for your devices long life.
Also quick note using a charger that charges your device faster will decrease the life of your battery, remember slow charging is best for the battery and that goes for all batteries
To answer conclusively as I have before:
I've had many many many phones and this is what I've learned over the years through experience and a lot of searching. Our phones are designed for whatever rating it is on the stock charger, which is 1A. However we have chargers that support more current. Which leads us into the next part.
Phones will only "pull" what is it rated for. It controls the final pressure valve in the water metaphor. In this example. Our phones are rated 1A Max @ stock kernel. "Extra power" isnt and cannot used up due to this rating. hence no extra loss except on your wallet. Fast charge raises the rating and limits vary from kernel to kernel. I've used my phone with a 2.4a charger + fast charge enabled before and its fine. Its a little warm (more on that in next paragraph) I'm on "dirty unicorns" ROM and I haven't gotten around to checking the limits
Regardless.. Whether it is detrimental to your phone battery is personal choice as having the % below 40 and heat is #1 enemy to batteries. Our batteries are designed for 5 years max anyway. If you want to play it safe, get a 1A charger and a max 6ft cable as more = less current. Make sure this cable is not from eBay or has sufficient guage size as the copper in some eBay cables can be thinner than your hair. This is important.
If you're looking for unpractical long term savings. Keep your phone room temperature within its temperature rating. Keep charge above 40%, optimally around 80% as lithium batteries degenerate when kept near 100% for too long. (See how frail our current battery designs are? There are higher battery tech our there, but due to cost none are in phones)
I've had horrible horrible power efficiency Roms before and as worst, it just stays on one % value without dropping (no fast charge, 1a charger)
Charging only cables are useless because since 4.3 kernels, android supports iPhone chargers as well.
In addition, car chargers have built in voltage regulators in them, our 12v car source can actually range from 8v to 30v depending on conditions. 8v on crank, and during cold days, 14.4 alternator running, 24v on car boosts. Most car 12v ports are unregulated and Most car chargers operate around 11-15v and give off excess power as heat. Given this, in truly exceptional cases, unless you deliberately overload the charger, we're still good as 5v from a GOOD charger are pretty stable for the phone. Monoprice sells good chargers with good electronic internals for a very good price. Bad chargers pass off this electrical noise to your phone.
TL-Dr.. no difference between 2.4a and 1a. Phone takes what it is rated for(1a). Extra isn't used. Fast charge kernels can increase this rating at a slight warming of phone. In all cases, heat / below 40% = more detrimental to battery life than current speeds. Get a good cable with good gauge size. (Copper width)
If you need further proof, google the terms I have presented or search XDA. There has been many "conclusive" posts on this matter and you'll find many of them say this same exact thing.
Phew.. What a long post.
Sent from my One
Smart IC Powerful will determine the current which your phone needs
Nazgulled said:
Thanks anyway
But if anyone knows the answer for a fact, please pitch in...
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Smart IC Powerful USB Car charger will determine the electric current which your phone needs
Sold by HAWEEL and Fulfilled by Amazon
ASIN: B00Z65KBVM
HTC m7 can take max 1.5A but it seem to not work with many chargers, in such case it falls back to 1A.
But if youre using the phone for GPS navigation, then charging faster will just make it more hot (hot from usage + even more hot from charging) and it will stop charging anyway (because of the heat).
Also, heat is biggest enemy of batteries, the hotter it gets while charging the worse it is for the battery.
Hello! I m using a generic 2.5 mAh 5.0v Charger is it going to hurt my Battery or Mobile OR not????
You can use any micro usb charger, kernel will limit the current.
i'm using "generic" (connectIT) dual usb 2.1/3.1A charger without problem...
btw edit the thread name - charger is spelled wrong (just to help other people with searching in the future)
from the first day on my purchases using g2, more than a year.
It's common sense that higher current = more heat = faster li-ion/lipo degeneration. If you occasionally need a 2+mAh charge, it won't really hurt your battery too much. However, for everyday charging, stick with ~1mah in order to preserve your battery. I personally use an 1mah(5w) iphone charger because it's got the cleanest output out of all the readily available chargers. In my car I have a 2.1mah charger in case I need a quick top up.
Fyi, the phone will only draw a max of ~2mah regardless of what charger you use.
stan54 said:
It's common sense that higher current = more heat = faster li-ion/lipo degeneration. If you occasionally need a 2+mAh charge, it won't really hurt your battery too much. However, for everyday charging, stick with ~1mah in order to preserve your battery. I personally use an 1mah(5w) iphone charger because it's got the cleanest output out of all the readily available chargers. In my car I have a 2.1mah charger in case I need a quick top up.
Fyi, the phone will only draw a max of ~2mah regardless of what charger you use.
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But as stated above kernal will limit the current???
yes the kernel will limit the charging current its ok to stick to any 5v DC charger
touqeer.tx said:
But as stated above kernal will limit the current???
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Yes, the phone will only draw as much current as it's designed to. You could hook it up to a 50a charger if you wanted and it would still draw less than the 2a limit regardless. The only thing that's important is the voltage which happens to be 5v on nearly all modern phones.
stan54 said:
It's common sense that higher current = more heat = faster li-ion/lipo degeneration. If you occasionally need a 2+mAh charge, it won't really hurt your battery too much. However, for everyday charging, stick with ~1mah in order to preserve your battery. I personally use an 1mah(5w) iphone charger because it's got the cleanest output out of all the readily available chargers. In my car I have a 2.1mah charger in case I need a quick top up.
Fyi, the phone will only draw a max of ~2mah regardless of what charger you use.
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Hard to believe a word from you considering you can't even get the current unit right. It's amp aka A. Not mAh, which is both wrong in unit and scale (that's milliamp * hour, that's for capacity).
A typical USB BC compliant charger can supply up to 5V 1.5A, of course there are 5V 2/2.1A chargers around.
The charger only limits the maximum power a device can draw, it has nothing to do with the actual charging process if the device can't draw more than said maximum.
As for you your other baseless claims, typical Li-ion based batteries can at least charge at 1C, that is 1000mA=1A (of course this is actual charging current, which is approximately 1.2x the supplied current on a 5V charger) for a 1000mAh battery, 2A for 2000mAh battery and so forth. There's NO such thing as occasional "2+mAh" is safe. 1C is always safe and that actual number is tied to your battery capacity (5V2.5A would be perfectly safe for a 3000mAh/3.8V battery even if the phone actually took that current).
levizx said:
Hard to believe...
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This is what happens when people can't even read right the charger label.
Val D. said:
This is what happens when people can't even read right the charger label.
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LoL That's Right