[Q] Battery drain while connected to car charger - One (M7) Q&A, Help & Troubleshooting

Using CM10.1 (06-14 nightly) on my One (International), connected to a Belkin 1A USB car charger with a decent quality USB cable. The phone discharges slowly in general use, and quickly when using GPS. Looking in battery settings it shows "Charging (AC)", which would suggest that it's drawing the full 1A for charging. I didn't notice this problem on stock Sense, although it's been a while since I used that.
Has anybody else seen anything similar on their One? Is there any useful information I could get from a logcat to give to the CM devs?
Thanks in advance,
Jon

OK I checked on stock and it does drain similarly. Should I just get a more powerful charger or could I have a hardware problem? Tried with 2 different 1A car adaptors.
Sent from my One using xda premium

Have you got a clamp meter or know someone who has one? That will tell you how many amps are going into your phone. It does sound like the charger though as your charger at home should be similar voltage/amps to the car charger only the AC charger needs a transformer and rectifier to step down the voltage and change it from AC to DC, car chargers just step down the voltage a little (12v-5v) so require little additional size. Probably easiest to swap out the charger, they're pretty cheap
Sent from my One using xda premium
Sent from my One using xda premium

I think you need a bigger charging maybe the charger is not able to provide the needed ampere.
Sent from my HTC One using xda app-developers app

Thanks guys. I've ordered a 3.6A charger which had reviews saying it worked well for high power usage Android devices. So hopefully that'll sort things out. I'll post back my results.

OK, tried with the new charger and a good USB cable, and all is well. Even with GPS and Spotify running together the phone still charges slowly.

jondrums said:
OK, tried with the new charger and a good USB cable, and all is well. Even with GPS and Spotify running together the phone still charges slowly.
Click to expand...
Click to collapse
It's probably not about the Amp rating of the charger. You probably had a cheap charger unit that couldn't deliver the amperage the phone needed either cos it was using cheap parts or something. A proper 1amp charger will still do as well as your new 3.6A charger

ArmedandDangerous said:
It's probably not about the Amp rating of the charger. You probably had a cheap charger unit that couldn't deliver the amperage the phone needed either cos it was using cheap parts or something. A proper 1amp charger will still do as well as your new 3.6A charger
Click to expand...
Click to collapse
Yeah that makes sense. I just thought that if I got a massively over-specced charger then it would at least manage 1A Would have expected the Belkin one to work properly in the first place but never mind.

Related

[Q] GPS, batteries and car chargers

Hey guys
Have got the GPS working properly on my SGS (props to those who figured that out) but I've noticed something a little concerning.
When I'm running google navigation that battery continues to run down, even when its plugged into my car charger. It'll survive for a good few hours, but it seems a bit bad to arrive at wherever I'm going and need to borrow a mains charger when I get there.
Anyways, I'm normally running bluetooth to my jabra speakerphone/fm transmitter, but nothing else that should agitate the battery too much, and with GPS turned off, it happily charges even with the screen perma-lit.
Im running stock JG5, and my dash charger consists of a cigarette lighter to USB converter and the stock USB cable.
Any thoughts on whats up with this would be greatly appreciated!
The phone is probably consuming more power then the 500 mah charger can provide. You need a dedicated mini usb for charging, the ones that actually are usb cables only provide half power
Sent from my GT-I9000 using XDA App
this is what i use
http://forum.xda-developers.com/showpost.php?p=7677108&postcount=22
2A car charger
android53 said:
The phone is probably consuming more power then the 500 mah charger can provide. You need a dedicated mini usb for charging, the ones that actually are usb cables only provide half power
Sent from my GT-I9000 using XDA App
Click to expand...
Click to collapse
That kinda sucks .
Ah well, I'll see what I can find that outputs at that kinda range. Ty guys.

Nexus 7 Car Charger

I was just wondering if anyone here has spotted a Nexus 7 car charger? Does it not matter if it's not specifically made for the Nexus 7? I'm trying to find one to buy online and I'm having some troubles. First post here I think I came to the right place though. :laugh:
Silversub745 said:
I was just wondering if anyone here has spotted a Nexus 7 car charger? Does it not matter if it's not specifically made for the Nexus 7? I'm trying to find one to buy online and I'm having some troubles. First post here I think I came to the right place though. :laugh:
Click to expand...
Click to collapse
Clicked thanks on accident lol. Any USB car charger should work, but I would make sure you grap a 1 amp one just so it has enough output to charge the tablet at a decent rate.
probably better with a 2amp one. samsung makes one for the tab2, about $12 on amazon, and just use your own microusb cable to connect to it.
vroomr4 said:
probably better with a 2amp one. samsung makes one for the tab2, about $12 on amazon, and just use your own microusb cable to connect to it.
Click to expand...
Click to collapse
Heck, I didn't even know they had 2 amp ones.
vroomr4 said:
probably better with a 2amp one. samsung makes one for the tab2, about $12 on amazon, and just use your own microusb cable to connect to it.
Click to expand...
Click to collapse
Yup, go with a 2Amp one. Most of the cigarette lighter usb chargers are 2.1A.
Avoid the cheap Chinese 2+Amp car chargers, they can be so badly made they cause enough interference to wipe out your FM radio.
/edit 1Amp will be fine but don't go lower, the N7 would likely burn it out.
FYI I tried a 5v 1a wall charger and my gnex7 said f u wouldn't take the charge. 2a or nothing I say
Sent from my Nexus 7 using xda app-developers app
Troute said:
Avoid the cheap Chinese 2+Amp car chargers, they can be so badly made they cause enough interference to wipe out your FM radio.
/edit 1Amp will be fine but don't go lower, the N7 would likely burn it out.
Click to expand...
Click to collapse
Do you already have the Nexus 7? If so, can you take a look at the charger and see if rated at 1A output and/or try to charge it with a charger that came with your phone?
I am just curious if it can actually charge with less than 2A. The charger listed in the Play Store outputs 2Amps and I thought most tablets require 2A to charge.
https://play.google.com/store/devic...sMSwyLDExMSwiZGV2aWNlLW5leHVzXzdfY2hhcmdlciJd
Fusion777 said:
FYI I tried a 5v 1a wall charger and my gnex7 said f u wouldn't take the charge. 2a or nothing I say
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Thanks for verifying.
gsrrr said:
Do you already have the Nexus 7? If so, can you take a look at the charger and see if rated at 1A output and/or try to charge it with a charger that came with your phone?
Thanks for verifying.
Click to expand...
Click to collapse
Still waiting, should only be a couple of days now though...
I know this is something most people never do...but if you read the manual for the Nexus 7 it says you can charge it on a standard USB port with the Nexus 7 in sleep mode (no doubt because the power draw is much less). Standard USB ports are typically .5A...sometimes less. I would say that's the actual minimum. For the fastest charging 2A is what you want though.
The ASUS charger that comes with the N7 is rated at 2A (10W). I tested an old BlackBerry 0.85A (~4W) micoUSB charger and it seemed to work fine and the N7 didn't complain though I didn't do any scientific tests against the charging rates.
The 0.5A (2.5W) chargers probably won't even charge the unit if you're actively using it.
Cheers,
Kermee
Kermee said:
The ASUS charger that comes with the N7 is rated at 2A (10W). I tested an old BlackBerry 0.85A (~4W) micoUSB charger and it seemed to work fine and the N7 didn't complain though I didn't do any scientific tests against the charging rates.
The 0.5A (2.5W) chargers probably won't even charge the unit if you're actively using it.
Cheers,
Kermee
Click to expand...
Click to collapse
Yeah...read my previous post...the manual says you can charge on a standard usb port (0.5A sometimes less) but only if the Nexus 7 is in sleep mode...ie you're not actively using it. If you can't charge it while connected to USB and it's in the sleep state...then your usb port is probably a low power USB port (<0.5A).
For those looking for a good backup battery charger for it...I recommend this one: http://www.amazon.com/gp/product/B005NGKR54/ref=oh_details_o05_s00_i00
works perfectly with my Nexus 7 (just make sure to use the correct USB out port on it as only one of them is 2A)
DealExtreme Charger
Saw this one on DealExtreme, even come with cable:
http://www.dealextreme.com/p/car-ci...-port-for-google-nexus-7-tablet-146751?item=8
Will be ordering will update when arrives. Also they're carrying Nexus 7 Cables in Pink, Green and Orange.
Was using a Sprint micro-USB plus charger (model PVX8823) with attached cable and standard USB port for 2nd device that I was using for my phone. Output is 0.65Amp which isn't sufficient and will slowly drain the N7 battery while in use. ~$35 at Sprint retail store. Wouldn't recommend for obvious reason.
Fortunately, had a spare Motorola SPN5400A 1Amp I bought with some screen protectors from Amazon because it was cheap like ~$5. 1Amp is sufficiently to maintain the charge while in use at near worse case running 3D games like Dead Trigger, Shadowngun, etc. So, 1Amp is minimum threshold.
You need a charger that:
1) Is capable of 2A (1.5A may be sufficient, 1A is a little too low)
2) Shorts D+ and D- together - This rules out most iPad chargers.
If it says it is made for iPod/iPad it will not work without modifications or adapters.
Samsung tablet chargers will work.
If you take an iPad charger, open it up, and short D+ and D- together, it will work.
dkhilo said:
Saw this one on DealExtreme, even come with cable:
Will be ordering will update when arrives. Also they're carrying Nexus 7 Cables in Pink, Green and Orange.
Click to expand...
Click to collapse
Sorry to bump an old thread but any feedback with that charger? I'm looking for one with 2 port to power both my N7 and my droid razr maxx while in car.
dcpuser said:
Sorry to bump an old thread but any feedback with that charger? I'm looking for one with 2 port to power both my N7 and my droid razr maxx while in car.
Click to expand...
Click to collapse
Most chargers for android phones will work. I use my HTC charger for ,mine and I bought a car charge that has the standard micro USB connector but also has another USB port so I can charge 2 devices at the same time with 1 charging unit. You droid razor charger will work just fine. You just need to locate a charger that is capable of charging 2 devices at the same time such as this one
http://www.amazon.com/GTMax-Metalic-Vehicle-Charger-Adapter/dp/B005X5L8PI
You'll be good to go with this.
Sent from my Nexus 7 using xda premium
dcpuser said:
Sorry to bump an old thread but any feedback with that charger? I'm looking for one with 2 port to power both my N7 and my droid razr maxx while in car.
Click to expand...
Click to collapse
Check out this oem charger from Sprint. Its a dual port charger with a 2a output and you dont have to worry about buying a knock off charger that may or may not perform as expected. It also can be used as a wall charger. Good price too....
http://www.ebay.com/itm/130712043019?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649#ht_1459wt_1399
So are any of these confirmed 100% to work? the one a few links back (GTMax) says works with iphone, and I thougth that meant would NOT work with N7. So I am confused on what will work, and I am already on my 2nd Nexus7 being I blew out the USB trying a bunch of differnt chargers for the car.
I would like something that is small and can have multiple USB plugged in, but not a show stopper, just hope to find something on Amazon (Prefer Prime) so I can oder with my case today. Really want to use this in the car more (GPS\GoogleMusic..ect.), but with no power not a great option.
Thanks in Advance,
Drops
dkhilo said:
Saw this one on DealExtreme, even come with cable:
In for the orange so it will be easy to spot if misplaced. Thanks!
Click to expand...
Click to collapse

[Q] Car charging at half speed?

Does anyone know why the One might behave differently on a car USB charger compared to a Galaxy S3?
I noticed my One was charging slowly or not at all when in the car. Using the power stat screen in the SystemPanelLite free version it shows the One is only connected at USB charge power, not "AC" power. However if I plug this same cable into my old Galaxy S3 it shows in SystemPanelLite that it is charging at full AC speed. I tried both the One and S3 default charging cables, no difference.
I'm using a car charger rated to put out enough amps for full speed charging, and it works great with the S3. With my One I tested it just plugging it into the charger that came with it (AC outlet, not in the car) and only then do I get full AC charging speed.
Anyone have ideas on how to get full AC charging speed on the One in the car? Any suggested car chargers confirmed to charge at full speed?
quick charge is disabled. you also need to make sure the charger is at least 1A @ 5V.
On previous HTC phones, I'm led to believe that the data pins on the USB connection are shorted inside the charger, and that's how it detects AC vs USB. It's not AC arriving at the phone of course, in reality it's 5VDC, with "AC" it draws 1A vs 0.5A for USB.
If the USB cable is not wired appropriately, the HTC One will slow charge so that it doesn't draw more than the USB standard 500 mA. Your charger needs to be wired accordingly so that the HTC One knows that the charger is capable of supplying more current, otherwise the device won't pull the extra current to fast charge. See http://forum.xda-developers.com/showthread.php?t=844284 for details.
Benpope and rumball have correctly answered.
Sent from my HTC One using xda app-developers app
Will this charger work with the HTC One @ 1A? http://shopamerica.htc.com/product/productpop.htm?prId=41645
Well at this point I'm looking for anyone who can confirm they have a car charger/cable combo working with the One that will charge at or near 1 amp.
I don't think my cable is at fault since I've tried multiple ones, including the AC one that came with the One.
Although my current car charger worked great with my GS3, I guess the One is more picky. So can anyone recommend one that will definitely do 1 amp with the One?
the data function on the car kit cable doesnt work as well...plugged into computer and charges but nothing else (to bad to, liked the length of the cord)
BenPope said:
On previous HTC phones, I'm led to believe that the data pins on the USB connection are shorted inside the charger, and that's how it detects AC vs USB. It's not AC arriving at the phone of course, in reality it's 5VDC, with "AC" it draws 1A vs 0.5A for USB.
Click to expand...
Click to collapse
This is right, I had same issues with s3, resolved by buying a genuine Samsung charger. Before my Google maps drained more than it could charge. What's odd is that the s3 charges fine on his cable, unless different pins are shorted on an htc?
Sent from my GT-I9300 using xda premium
This one will work with HTC One
http://www.htcaccessorystore.com/uk/p_htc_item.aspx?i=246652&phone=246667
Sent from my HTC One using xda app-developers app
paul_59 said:
This one will work with HTC One
http://www.htcaccessorystore.com/uk/p_htc_item.aspx?i=246652&phone=246667
Click to expand...
Click to collapse
Have you used it and confirmed it charges the One at "AC" speeds?

[Q] Charger

Can someone tell me if the Htc One charger is the same as the One S please.
Most chargers nowadays unless an iDevice are the same 5v micro usb
Sent from my HTC One using xda premium
Thanks, just making sure. Replacing chargers and car chargers and HDMI adaptors is almost as expensive as the phone itself. :laugh:
born_fisherman said:
Most chargers nowadays unless an iDevice are the same 5v micro usb
Sent from my HTC One using xda premium
Click to expand...
Click to collapse
Careful. HTC does something funky with the wiring in their chargers and phones such that, when using a non HTC charger, the phone will only charge at 0.5 amp, vs 1 amp with an HTC charger. Net result is that your phone will take twice as long to charge with a non HTC charger. There are several threads on this subject, and I've observed it first hand on my One. The non HTC charger shouldn't hurt your phone though, only your patience...
Sent from my HTCONE using xda app-developers app
I've never had an issue.. have had HTC for years now and have gone thru several chargers bought from walgreens and they all seem to work fine. I usually charge overnight anyway so I never time the charge lengths. Ymmv I guess?
Sent from my HTC One using xda premium
I usually charge overnight as well. But I travel a lot, and when I do the GPS - a battery burner - gets a lot of use. What got me started exploring this, was when I saw my HTC ONE battery going in the wrong direction (slowly) while charging in the car while using the GPS. This led me to learning more than I ever wanted to know about HTC chargers and their funky wiring ... Apparently you can get around this by shorting two wires in the USB cable, but I have no intention of trying that!
Sent from my HTCONE using xda app-developers app
levman said:
I usually charge overnight as well. But I travel a lot, and when I do the GPS - a battery burner - gets a lot of use. What got me started exploring this, was when I saw my HTC ONE battery going in the wrong direction (slowly) while charging in the car while using the GPS. This led me to learning more than I ever wanted to know about HTC chargers and their funky wiring ... Apparently you can get around this by shorting two wires in the USB cable, but I have no intention of trying that!
Sent from my HTCONE using xda app-developers app
Click to expand...
Click to collapse
Ok I guess I can see that when using a high energy use app like navigation
Sent from my HTC One using xda premium
levman said:
Careful. HTC does something funky with the wiring in their chargers and phones such that, when using a non HTC charger, the phone will only charge at 0.5 amp, vs 1 amp with an HTC charger. Net result is that your phone will take twice as long to charge with a non HTC charger. There are several threads on this subject, and I've observed it first hand on my One. The non HTC charger shouldn't hurt your phone though, only your patience...
Sent from my HTCONE using xda app-developers app
Click to expand...
Click to collapse
I don't think the problem is at HTC but the charger you might have. I have successfully charge @ ~800mA (1000mA = 1 Amp)with different chargers ( Asus charger, Samsung charger and a newer palm charger). My new blackberry charger can charge @ ~600mA.
If I use my older palm charger, my Nokia charger, my old blackberry or a dollar store charger, it will only charge @ ~3xxmA.
If you read the spec carefully, you will see most newer *smartphone* charger max @ 1A, and older charger max @ 500mA. (or my BB charger max @ 800mA. )
So it's OK to use non HTC charger, just be sure to read the spec and find one charger =>1A.
Hope this help.
I'm on the lookout for a car charger someone can confirm will charge the One at full 1A speeds. I don't mean one where it claims to on amazon's site, but that you've actually witnessed it. Thanks for any help!
QuantifyThis said:
I'm on the lookout for a car charger someone can confirm will charge the One at full 1A speeds. I don't mean one where it claims to on amazon's site, but that you've actually witnessed it. Thanks for any help!
Click to expand...
Click to collapse
Yeah, I can't find anything on eBay or Amazon meet their description. The one works good for me is a Verizon Charger but it cost 35 usd...
Sent from my HTC One using xda app-developers app
levman said:
I usually charge overnight as well. But I travel a lot, and when I do the GPS - a battery burner - gets a lot of use. What got me started exploring this, was when I saw my HTC ONE battery going in the wrong direction (slowly) while charging in the car while using the GPS. This led me to learning more than I ever wanted to know about HTC chargers and their funky wiring ... Apparently you can get around this by shorting two wires in the USB cable, but I have no intention of trying that!
Sent from my HTCONE using xda app-developers app
Click to expand...
Click to collapse
That is correct, usb specification is 5v, with 500mA (0.5A) maximum, hence the modified cable you refer to. The simplest way if you don't wish to modify cables is to buy HTC car charger
http://www.htcaccessorystore.com/uk/p_htc_item.aspx?i=246652&phone=246667
Which will charge at up to 1A with any HTC phone
Sent from my HTC One using xda app-developers app
You can find HTC chargers on amazon that will give you the full 1 amp. Look for older phone models like treo pro or mytouch 4g and they'll be cheaper but work fine.
QuantifyThis said:
I'm on the lookout for a car charger someone can confirm will charge the One at full 1A speeds. I don't mean one where it claims to on amazon's site, but that you've actually witnessed it. Thanks for any help!
Click to expand...
Click to collapse
Sent from my HTC One using xda app-developers app
What happens if I charge the phone with a 2am charger? Does it damage my battery? Will it charge faster?
ksarius said:
What happens if I charge the phone with a 2am charger? Does it damage my battery? Will it charge faster?
Click to expand...
Click to collapse
The charger *should* only provide 2A if the device (phone) request it.
Just thought I would chime in on some observations here. Long story short, when I bought my HTC One, I left the charger in the box and continued to use my multi-port USB charger with 3x1A ports and 1x2.1A port.
When connected to the 1A port, I found it quite strange that my phone was taking 4 hours or longer to fully charge. Also observed the same thing when connected to the 2.1A port. I was thinking that something was up with my phone somehow limiting the maximum charge current.
Anyway, I read a suggestion to use SystemPanel Lite to check for USB or AC power connected and sure enough it was reporting USB power. I remember the case with my Xperia X10 where you have to short out the two middle (data) pins on the cable or in the charger so that the phone detects that it is being connected to an actual charger. I tested it with my old Xperia charger, another generic USB charger, and the HTC charger and managed to get SystemPanel Lite to report it as AC connected.
But here is the interesting part. I have a car charger rated for 1A. Initially it never worked with the Xperia X10 until I opened it up and shorted out the two data pins. It has worked ever since. However, when I connect this to my HTC One, it still reports it as USB connected.
This has got me thinking that there maybe something more than just shorting out the two data pins for the HTC One to detect that an actual charger is connected. Just some food for thought.
Don't tell me HTC pulled an Apple and we have to buy only HTC chargers to get full speed charging? Does anyone have a confirmed non-HTC car charger that reports "AC" charging in SystemPanel Lite?
QuantifyThis said:
Don't tell me HTC pulled an Apple and we have to buy only HTC chargers to get full speed charging? Does anyone have a confirmed non-HTC car charger that reports "AC" charging in SystemPanel Lite?
Click to expand...
Click to collapse
As per my post, I tested a generic USB 1A charger (it's at home, but it was one that was supplied with a Netcomm MyZone) and with my stock Sony Ericsson USB 700mA charger, both of which reported as AC connected. There has to be another way that these can be detected as chargers other than a simple short of the data pins.
Tested not to work so far has been an iPhone charger, Amacrox AX025-TACH1, Philips Power Bug, and two generic USB car chargers both with the data pins open then shorted.
Non HTC charger plugged into wall reports ac power. Proof
Sent from my HTC One using xda premium
Are either of those car chargers?
QuantifyThis said:
Are either of those car chargers?
Click to expand...
Click to collapse
Good point. My apologies. The work "car" managed to be skipped as I read it.

Decent USB cable in the UK?

Hi,
Can anyone recommend a decent USB cable for my sons N7?
Need to get a replacement, but the ones i currently have are not beefy enough to charge properly.
Cheers
Paul
Sent from my S3, using TT2
Same problem, can only find pathetic skinny fragile things.
I have used this cable without any probs
AKASA part no AK-CBUB05-10BK
bought from CPC order code CS20881
Try a flat ribbon cable, Amazon Uk have them http://www.amazon.co.uk/s/ref=nb_sb...onics&rh=i:electronics,k:flat micro usb cable Various lengths and colours. I use a standard 1.2mtr blue one that I bought last year.
I'm using Logitech cable for charging (got it with the mouse) and Nokia cable for PC (they are always connected, that's why separate cables), so get one of those.
I've only had problems with 3 years old Samsung cable because it kept falling out (it stays in on my SE phone)
I really doubt beefyness of the cable affects charging though. I charged my tabled on just about any cable I've found laying around in the house with no problems
The reason as to why your charge cannot keep up is most likely due to using a charger with lower amperage (i.e 1amp/1A).
As long as you purchase a 2amp charger and compatible usb cable, then you shouldn't have any more issues with draining the battery faster than it can be charged thanks to the 2amp charge rate.
Sent from my GT-N7105 using xda app-developers app
MasDroid said:
The reason as to why your charge cannot keep up is most likely due to using a charger with lower amperage (i.e 1amp/1A).
As long as you purchase a 2amp charger and compatible usb cable, then you shouldn't have any more issues with draining the battery faster than it can be charged thanks to the 2amp charge rate.
Sent from my GT-N7105 using xda app-developers app
Click to expand...
Click to collapse
Thanks for the reply guys, this is using the Asus charger that came with the device, just that the original cable split, so I need a replacement.
Have looked at the cables, might get one of the flat ones as they look good.
Cheers,
Paul.
Just to let you know I bought the flat ones and they fit and work really well.
Thanks for the replys all.
Sent from my S3, using TT2
Trick is to get a short a cable as you can. The impedance really effects charging. The difference between my stock and a 6' cable is like a 60% drop.
Sent from my Nexus 7 using XDA Premium HD app

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