Database Users

xda charging in car problem

hi all
i'd like to ask your opinion on what this fault
i purchased a xda2 which i use in my car with a gps reciever & satnav software. the cable i use is in the pic below. it connects to the ciggy lighter and then powers the gps box and powers/charges the phone at the same time.
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the problem is that if the battery is below about 35% and i plug it into the car charger and turn on the gps stuff the battery doesn't charge eg. battery showing 18%. i plugged it into car charger and turned on gps stuff. drove 20 mins home and battery was showing 8 % by the time i got home even though the battery status thing shows as charging.
BUT
if the battery is at about 70 % and i use it in my car with all the gps stuff it charges fine.
does this point to a faulty battery or something more serious
thanks for any input.

It is all about the mA. check out the mA specifications on the cable. 500 mA output is too low. 1000mA is ok.

Interesting battery drain

Its weird that my battery drains very fast from 90 to 30 but after 30 it slows way down. My usage pattern is the same throughout the day as can be seen. Anyone know why that is?
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Sent from my AT&T Samsung Galaxy S III

Probably app related. Some apps, like Dropbox, will stop synching with the server once the battery gets to a certain level. Are you using any server intensive apps? Streaming?

schwann said:
Its weird that my battery drains very fast from 90 to 30 but after 30 it slows way down. My usage pattern is the same throughout the day as can be seen. Anyone know why that is?
Sent from my AT&T Samsung Galaxy S III
Click to expand...
Click to collapse
You should calibrate your battery. I always do this after switching ROMs
I leave it charging overnight and, when I wake up, I delete the file 'batterystats.bin' with the phone still plugged (I don't remember in which folder, but there are some apps in the Market which delete it (Battery Calibration or something like that)), then I reboot and unplug it. Let the phone running until the battery hits 0%, then recharge it to 100% again. It should help you with your problem.

[Q] Nexus 7 bricked/fried. Any ideas why?

Hello guys.
I have a Nexus 7, with a huge problem.
Ever since my little sister took it to Europe (and plugged it into a 220 volt instead of the 110 that we use here in the U.S), it died. Now, I've opened it and checked if the battery was somehow poorly plugged or something, but nothing.
The device will not turn on unless connected to a power source (and even then, not 100% of the time) (both my Macbook and wall work). This is what it looks like:
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Is this a battery problem? Or a screen problem?
Also, when I took these pictures, it was the first time I could see the "Google" logo on the screen (although barely)
Any help would be greatly appreciated!

From the look of it you have either a damaged motherboard or screen. The motherboard is probably more likely. Can you check on your charger and see what the input voltage is some chargers can cope with 100-240v. What happens when you turn it on/plug it into a computer does it boot is it recognised by the computer? And lastly is there any possibility it was dropped?
Its possible that doubling the input voltage may have produced a surge in the usb voltage but it would be more likely to just fry your charger.
Sent from my Nexus 7 using xda app-developers app

Publish Your Battery!!

This is the Official Topic you to know how the new Moto G (2014) behaves in the battery department.
That's it, friends.
Publish results of your batteries!

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My bro is uses this cell so can't tell much abt usage .

Managed to get slightly over 7 hours before the phone shut off.
GPS: Power saving mode
Screen: Brightness set to indoor conditions (manual)
ROM: Default
Battery Saving Mode: Disabled
WiFi and Sync: Always enabled
Screen Time Out: 2 minutes after inactivity
Usage: Mainly Facebook, Chrome, WhatsApp, few YouTube vids and Google Docs. Nothing intensive.
Phone charged from 0-100% in under 2 hours without the OS running. I used Anker Power IQ 40W 5-port desktop charger and Moto's USB cable. Back of the phone remained cool throughout
If you have any questions, feel free to ask :good:.

There already is a thread for this here
Thread closed

Slow charging on Tab A SM-T580

I received a faulty Tab A (soft brick) which I was able to fix, however it seems to charge very slow. I used 3 different chargers for a Samsung and Xiaomi mobiles and Asus tablet, all around 2-4a, but they all charged at the same rate. It took 5hrs to reach 94%. I left it on flight mode for the last 24hrs and it's only dropped 1% (which is amazing) so I'm sure it's not the battery at fault. If multiple chargers/cables are charging at the same rate and the battery loss is solid I'm guessing it could be the USB port. If not, what else could it be? I don't know the history of this tablet as they just dumped it on me.
Very shallow curve, it should be a lot steeper:
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Hello, I own a T585 and I can tell you that this is very picky with loading ports.
I have a multi loader (Easyacc) and the Tab is only with 2.1 Ampere fast charging.
Not with 1.0 not with 2.4 not with more.
Reccomend you to use a similar charger or a original.

I didn't quite understand what you mean. So I have to use a 2.1a charger or original Tab A charger only? I found them in 5v and 12v, both for Tab A, which one is correct?