After testing last night and the night before. I have the result. 1st night I had the DS7 turned off, morning I woke up, was fully charged. Last night I left the device on. Woke up overnight still wasnt charged up. Now this doesnt seem promising for USB charging..
I know from G1 the AC charge always lasted longer then USB charge. Since USB can only charge to a maximum voltage. Guess the DS7 on 4g mode just uses more then it can charge. Kinda crappy. =/
I agree with that. I think it can be solved with a custom ROM using an optimized Kernel. That's what happened to the HTC G2, with the custom Kernel, it runs smoothly and battery last as hell.
Can you underclock with the stock kernel using something like SetCPU? Maybe with the screen off and set to a minimum clock speed it would do better.
SetCPU does indeed work. But I think it already lowers the CPU on its own when the screen is off. I think it has more to do with the 4g radio battery drain then it does the CPU.
The Streak 7 does not trickle charge via USB. It must be plugged in to charge.
Sent from my Dell Streak 7 using XDA App
Well I can confirm that too. Came to report that it wont matter about radio or cpu speed. USB doesnt charge the battery but it DOES power the device. So USB tethering will keep the device on and tethered and not drain the battery, it just wont charge it.
HOWEVER it WILL charge the battery IF the device is turned off via usb.
This is very common with tablet devices these days. Many Android tablets as well as the iPad do this. A USB "Y" cable connected to 2 USB ports simultaneously works though. Otherwise there simply aren't enough amps going to the unit. Newer USB ports that provide more than the 5V / 1 AMP current output also don't have this issue.
Ok update on something:
While Device is off, It charges to full. Plain and simple.
While device is on and usb tethering only to your PC. No battery drain, no charging. (Which is GOOD!)
While device is on and you are playing a game like gun bros or something more intensive while 4g radio is on or so, battery will drain.
So it does seem that if you do alot while on USB you will still get a drain, just not as fast. But since it doesnt charge it at all. Losing even 1% at a time.. is =/
Related
Anyone has any idea why do we need to turn on "disable usb charging" ?
Settings -> Power -> Advanced
[ x ] When device is turned on, do not charge the battery when connected to the PC
In what situation?
One thing that I can think of ... is to preserve the battery to have a good condition by only charging if you have "enough time". That means, to charge until 100% and beyond.
Any more valid / good reason?
Thanks.
gogol said:
Anyone has any idea why do we need to turn on "disable usb charging" ?
Settings -> Power -> Advanced
[ x ] When device is turned on, do not charge the battery when connected to the PC
In what situation?
One thing that I can think of ... is to preserve the battery to have a good condition by only charging if you have "enough time". That means, to charge until 100% and beyond.
Any more valid / good reason?
Thanks.
Click to expand...
Click to collapse
In my case, i thin is better to make three or four completes cycles of charge/discharge, so for the moment i use this option to prevent charging while i connect to PC to install or trasfer something....after complete discharge, i charge full...
Regards.
Hi,
It's probably to preserve Laptop/Notebook battery when on the go...
alexxo said:
Hi,
It's probably to preserve Laptop/Notebook battery when on the go...
Click to expand...
Click to collapse
Yes, this is another one.... i don't have a laptop so i don't think in it
I reckon its so you can plug it into a unpowered USB hub which is near its limit of how much power it can supply...
g
charging
i think it might have something to do with the amps/volts, i'm not a scientist as you could already tell, but i do know that you shouldn't use a motorola charger to charge an htc product. i used a razr charger to charge my dash once and it killed the battery pretty well. so i figure you shouldnt use a non-approved charger to charge your device, be it via laptop or any other charger that didnt come in the box
My bet is that this is about battery life. I think that these batteries do best (live longest) if they go through complete charge-discharge cycles at least every 30 days.
I plug my TyTn into my computer when I am in the office and, unlike ACtiveSync, the charge always works!
I vote for the portable use theory as well, so you don't drain the battery on a laptop or unpowered hub that can't supply the additional current.
RemE said:
I vote for the portable use theory as well, so you don't drain the battery on a laptop or unpowered hub that can't supply the additional current.
Click to expand...
Click to collapse
I'm with you on this one. Current gen batteries don't need to be cycled so much for optimal performance. However, charging your phone via USB will drain your PC's battery more quickly if you are on the go.
The Kaiser draws a lot of current. Even when charging by USB I have seen the battery level dropping.
I have seen quite frequently USB ports being disabled due to too high current draw, making the connection unstable. If this was a problem this option would prevent it.
Surur
quite a few posts here about li-ion batteries and how best to look after them:
http://www.modaco.com/Warning-Battery-Chargin-t233233.html
That's good stuff especially the Wiki on them. I use a lot of lithiums at work and play. Bottom line, don't run them flat, ever, that's the only thing that will ruin them quickly. Most devices have protection circuitry to prevent this by shutting down. When you get to this point the battery should be charged ASAP because the small amount of drainage in the device will take the battery past the critical low point if left in this very low state for any length of time (say more than a few days).
Cycling really doesn't do much for lithiums, their total capacity decreases from date of manufacture slowly over time, weather you use them alot or not. This is unlike other batteries.
Best storage state for lithiums is 50%, not full. But in a phone, best rule is to just top them up whenever possible, plus you never know when you are going to get that marathon phone call
As a few others have alluded to, this is used when you're tethering on the go. WM5 / 8525 doesn't have this switch, so when tethering via USB on the 8525, it will literally suck the life out of my laptop battery.
Glad to hear that this switch was added in WM6 / Kaiser.
The best battery information I found is here: http://www.batteryuniversity.com/parttwo-34.htm
Summary (for li-ion batteries, as in Kaiser):
1. Avoid full discharge; partial discharge/charge cycle is better. However, a full charge/discharge cycle once every 30 times is useful to keep battery gauge calibrated correctly (doesn't really help longevity, but prevents erroneous gauge from forcing early retirement of the battery).
2. Avoid prolonged storage at full charge and/or high heat (optimal charge is ~40%).
3. Avoid high rates of charge or discharge. Presumably the charge rate is already set at an acceptable rate by the manufacturer; as for discharge, it probably can't be helped if you need to run some ultra-high load applications on the phone. One thing this confirms: it is good to charge the battery using the USB; the possibly lower voltage available during the USB charge is helping, not hurting, the battery. So definitely, the "do not charge when plugged in" option is only to save your laptop battery, not to help the phone battery.
As said already in this thread, its so you can connect to a non-powered usb hub or a laptop usb port that can't supply enough.
WM devices normally detect supplied power and go into charge mode before they are polled by the PC/Laptop via Activesync for data transfer. If the charge system pulls the port down then data transfer is disrupted.
When tethered to a laptop and the laptop is running on battery, you may want to disable charging to conserve the laptop's battery.
This is the answer I got from batteries4less where I bought a replacement battery for my 8525.
You should generally charge your battery every night. It is not good to do
it continually during the day. It will wear it down faster. Thank you
Alix Kane
CBW Customer Service Rep.
Cellphone Battery Warehouse
www.batteries4less.com
1800-300-9993
Click to expand...
Click to collapse
By the way.....shameless plug: I ordered a battery late on thursday afternoon and received my replacement battery on saturday and installed it in the phone. On monday I bought the Tilt 8925 and then emailed that I bought a new phone and asked them if I could exchange it for a Tilt 8925 battery and the next email I received from them about an hour or so later said the new battery was on the way and to send the 8525 battery back in that package.
These guys will get my battery business from now on.
Years ago i had a t-mobile dash also known as an htc excalibur, and i would use it to tether to my computer for 6 to 8 hours a day as a high speed modem and low and behold, it burnt out the battery. I bought a new battery and switched to Kaiser OS that had an option to disable usb charging and never had a problem after that... Now if you only connect to a computer to transfer a few files back and forth every onle in a while then there probably wont be a problem because that is not going to drain your battery very fast so it will only charge every once in a while and that is ok. But when you tether to a computer to use your phone as a high speed modem it takes ALOT of battery power. I saw a post in a different thread here on xda that said that when your battery reaches 100% that it stops charging. Yes that is correct. But even though the battery will stop charging at 100%. As soon as it drops 5 or 10 % is starts charging again and when you tether your phone as a modem it will drop 5 or 10% within minutes so your phone will basically be charging nonstop which is defiantly not good for a battery and that my friends is what the disable usb charging is for.
Just as an added statement for those of you that disagree with what i have said. Try it yourself and see what happens. Tether your phone to your computer as a modem and surf the net, and play games, and download stuff for 6 or more hours a day. I bet in just a few weeks or months you will be replacing your battery too.
Reason to turn off phone charging when connected to PC
I installed "Syncois iOS & Android Manager FREE" to back up my Android phone data to my PC. The program would not work if my phone was charging when connected to my PC, it told me. So, I had to turn that charging option off. Outside of that, I will always have my phone charge when connected to my PC. Hope this helps!
I had problems with my phone, discharing in under five hours, and useing 5-6 hours to recharge..
When I got to work today, I exchanged the phone with a new one.. It was at 25%-... Small use, and it was down to 14%....
Now Its been 7 hours, and its back to 69%.. and still charging...
Anyone else having this problem?
I experience sort of the same thing...
Charging the phone takes forever (4-5 hours) and Im down to 70-65% charge when I get to work after a full nights charge (from 100%). On the way to work I listen to Spotify (no streaming) for 30 min, read a couple of emails... but nothing else...(wifi off but push mail on)
My conclusion was that I used a USB port for charging and my USB port may not delivering a lot of power (ie long charge time, but this was not a issue with other phones on the same USB ports).
I have also read that the battery charge "builds up" after a few recharges, but I have not experienced any difference the last week.
I will try to use the charger tonight (not USB)
The non-USB charger will be faster since it delivers 1 A. If I remember correctly, a normal USB-port only delivers 100 mA - so it should be 10 times faster
With the normal charger from LG.
0 til 100% goes in 2/2.5hours.
TakenName said:
Now Its been 7 hours, and its back to 69%.. and still charging...
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Click to collapse
That must be USB charging.
From a wall socket I get 10% / 10 mins - 100% charge in ~100 mins.
USB is restricted to 100mA if the device doesn't "connect" to the USB port (identifies itself blabla)
If it does, standard USB is rated at 500mA for each port.
I recommend using the wallcharger, as those usually deliver more juice.
Its not USB charge.. Connected to the "socket" in the wall...
I just noticed on the phone that battery condition is "overheated"....
This is the second phone I have with the same problem.....
oh.. and btw;
ive was done at work at 4pm, battery at 69%..
Now its almost 7pm, and its down to 25 %
Non USB charging from 4% till 100% 2 hours
TakenName said:
Its not USB charge.. Connected to the "socket" in the wall...
I just noticed on the phone that battery condition is "overheated"....
This is the second phone I have with the same problem.....
oh.. and btw;
ive was done at work at 4pm, battery at 69%..
Now its almost 7pm, and its down to 25 %
Click to expand...
Click to collapse
That's probably bad... unless the fuses in your house (charge at home) are bad?
Way, too slow and it should not get hot.
I put the phone in "Airplane" mode, and now it charge fast, and keeps the power/current(?)...
Since WiFi is allways disabled, it most be the phone connection that draws all the power out of it....
TakenName said:
I put the phone in "Airplane" mode, and now it charge fast, and keeps the power/current(?)...
Since WiFi is allways disabled, it most be the phone connection that draws all the power out of it....
Click to expand...
Click to collapse
Plus you get free airpoints!
Experiencing some issues with charging too.
Under heavy load (for instance 3D games), even if my phone is charging with the wallcharger, my battery slowly discharge and my phone eventually shuts off automatically
I also noticed that my phone can get really hot. I had this issue with MCR fr8 and fr12 with and without calibration. No overclocking or fancy kernels. I'm now considering sending my 2x back to LG with an insult letter.
Anyone experiencing this issue as well? Any clue how to fix that (wallcharger > 1A for instance?)
Supposedly the 2X has an issue with Radio usage. Using only 2G networks will improve it alot.
We are hoping for a fix in the Gingerbread ROM...
Also do you have the newest baseband installed when using FR12?
I already experienced this with fr8 and the old RIL so I don't think it's a baseband/RIL mismatch problem. I will see if fr12 and new radio improve things though.
Btw, I can see that phone/data layer takes up as much battery as wifi. Is that a normal ratio on an android phone? Can't remember battery usage on my previous phones.
I turned my XT860 off while it was charging today because I thought it would charger faster. Instead, it fully discharged. I had to disconnect it and reconnect in order for it to start charging again.
Here's what I observed:
1. Battery was dead. Plugged it in to charge (into my laptop)
2. After some time, the device turned on.
3. I turned it off, because I thought that it would charger faster that way.
4. I checked it hours later and found that it wouldn't turn on, not even to show a low battery alert. It's still plugged in. So I unplugged and plugged it back in, and now the white charging light is on.
Anyway seen this behaviour before?
Some laptops use a low power usb connection. A lot of the time this is true when the laptop is running on battery power. I know that charging mode actually requires an os running (which is why everyone always recommends keeping your phone charged before doing an SBF recovery), so I can easily see how if your laptop was sending the minimum power for data connectivity, and your phone was running in "charge mode" how it could drain.
That being said, I usually carry a upgraded my battery to the verizon extended, and also carry around a fully charged original battery, as well as an energi2go XP2000.
Sent from my XT860 using xda premium
danifunker said:
Some laptops use a low power usb connection. A lot of the time this is true when the laptop is running on battery power. I know that charging mode actually requires an os running (which is why everyone always recommends keeping your phone charged before doing an SBF recovery), so I can easily see how if your laptop was sending the minimum power for data connectivity, and your phone was running in "charge mode" how it could drain.
That being said, I usually carry a upgraded my battery to the verizon extended, and also carry around a fully charged original battery, as well as an energi2go XP2000.
Sent from my XT860 using xda premium
Click to expand...
Click to collapse
Actually, people recommend that you have your phone charged before doing an SBF is because the phone will not allow any programming to take place unless it has more than 50% battery. I discovered this the hard way when I bricked my phone with a low battery and was unable to charge it because it had was unable to boot. I wound up having to "hotwire" a charger directly to the battery terminals.
Hi,
I have a new and flawless Note, the USB connector is OK.
At night I connect the Note to the charger and I put some music on to fall asleep. Playback is configured to just play one album once.
Normally I put the phone in Flight Mode, in order to sleep without unnecessary radiation next to me.
On some few occations (it happend to me for like 5 times now), in the morning, the phone is not charged at all! But I am 100% sure that the battery status icon on the top bar signaled the charging mode.
This morning it happend again and I noticed that I left the Flight Mode off (because my wife is away and I want to stay in contact if needed).
Also, I noticed that I have been using a ZTE charger specked with 750mA, while the original Samsung Galaxy Note charger is rated 1000mA.
Can it be, that I was using the ZTE charger on its limit and that having apps running, or maintaining flight mode off, was enough to actually not being able to deliver that extra juice to charge the battery?
The other reason could perhaps be a software problem, like some app draining the battery as much as the charger is able to charge, so in the end the battery stays more or less the same.
I am positive that the USB port is not broken. I.E. I tested by unplugging and plugging the charger from the wall socket instead from the phone and all is recognized OK. Also, no issues when connecting to the PC.
What is odd: on previous occations I think I remember that I just plugged the phone back and it charged.
I swapped the chargers, but still I have this odd impression, fearing that the device might have an issue.
Anyone had similar problems?
Cheers,
vma
Yes, looks like a weak USB charge problem. You get similar behaviour if you try to charge the device from a PC - sometimes I have mine plugged in to my PC at work all day and it barely charges. Get home, put the official charger from Samsung in from a walk socket and it charges in an hour or two max.
Sent from my GT-N7000 using Tapatalk
I'm slightly confused,
is it normal for my phone to run at 1400 mhz while charging? it becomes a bit hot. it does charge to 100% no problem. but this is a first for me, as before it used to charge at 200mhz. and go to deep sleep, but would never go to deep sleep when wifi is on.
now it charges at 1400 mhz, goes to deep sleep even if wifi is on.
im sure this is not a normal thing. the phone did not SOD.
cheers in advance to those that can help.
anyone?
i dnt think that is normal. can you post specifics of your firmware and any apps you might be running in the background?
are u using the wall charger or via pc usb?
Zapped through server hops to XDA forums
I'm on ParanoidAndroid v0.2 all was good until I flashed kernel-cm-9-20120604WA.zip
and then let the note charge over night using the original wall charger.
wifi was turned off. possible apps open in background are facebook, BBS, cpuspy, Gmail and whatsapp as for most other apps i have turned auto sync off.
ive reflashed the older kernel i had (even though it is newer than the kernel i flashed) kernel-cm-9-Nightly20120607WA.zip, and i have just put the note on usb charging and as normal it is 200mhz while charging., am slightly confused.
I will turn on wifi to see if it lets the device go to sleep and will update.
so after 10 minutes of turning on wifi and just locking the screen the phone is going to deep sleep which is a good sign. the problem is solved. but I really want to know why the problem happened, is it due to the kernel alone? i doubt it.
I also found this problem once. It was 1400 mHz while charging and went to deep sleep when unplug. and 1400 mHz again on charging.
Just reboot the phone and everything come back to normal.
Don't know what happened?
VBUS present wakelock caused by using Apple compatible charger
It does not look like this was ever resolved, so figured I would chime in since I have been looking at this for a while.
If you use a charger which is compatible with Apple products, it will cause the vbus_present wakelock since Apple does not adhere to USB standards and requires two of the pins to be bridged or open (can't remember which) to work for their products. However, when you charge a device that does adhere to USB standards with one of these chargers, it will cause the wakelock (on all the samsung phones I have seen, anyway).
Another downside to using an apple compatible charger is that you can never get more than 500ma out of it due to the non-standard USB connection, even if the charger is capable of 2000ma output. So you get slower charging.
When you are connected to any charger, this wakelock will be present. If you use an Apple compatible charger, it will persist after you unplug it and will drain your battery around 10% per hour since it prevents it from going into deep sleep. You can clear the wakelock by rebooting the phone or plugging it into a standard USB charger, such as a PC or Samsung charger, even for a few seconds.
You can use Better Battery Stats to see the effects of this wakelock. Note that it can take a few minutes to show up once you have unplugged from the apple charger.
Yes, this really p*sses me off. This is one of the reasons I no longer have any Apple products in my house and long since thrown away all the Apple compatible wall chargers I once had. It still comes back to bite me since I still have a couple of chargers that contain batteries to charge when you are away from a wall outlet and they both cause this. When I use them I just have to make sure I reboot afterward. The USB outlet I have installed behind the stereo in my car also causes this wakelock. I have one to replace it but have not gotten around to removing the stereo to do this yet.
The next best solution to never using an apple compatible charger at this point would be to have a kernel that addresses this and removes the wakelock after it is unplugged but I don't see this happening.