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Troubleshoot battery issue - metrics inside

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martinu
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Plug Troubleshoot battery issue - metrics inside

My HOX+ battery has been acting strange for some time and I decided to monitor the battery drain/charge.

I've noticed a few problems:
1. From about 87-88% upwards, it doesn't seem to draw power anymore, it just goes up to 100%.
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2. From about 30% downwards, the drain % spikes up and quickly goes to 0%. When the battery reaches 30%, I know I can't do anything anymore or else it will die in ~10 minutes, if not less.

I dont know what causes the increase in power drain, I only had the screen turned on and even put the phone in airplane mode. You can see that before this starts happening, the battery drain was pretty stable around 400-500 mA, while watching HD Youtube videos over wi-fi (which also means that other apps were syncing; i have a few messaging apps and a few email accounts with sync on).
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3. Watching a movie or browsing some websites with Chrome browser will drain more power than the phone can draw from the wall charger. A full charge takes about 4 hours, even with wi-fi off.

I've tried charging with different HTC chargers and different HTC/standard USB cables, I didn't notice any difference. I don't get it, is the HOX+ really that bad, power-wise?


Please let me know if I can provide other logs or details.
I have the HOX+ international version, with the following specs:
CPU Tegra3 1.7mhz, 1GB RAM, 64GB storage
Android 4.2.2
HTC Sense 5.0
not rooted, stock everything
HTC SDK API level 5.41


Is my battery faulty? Is it a software issue? The app is not reporting correct values? Is there anything to do?
 
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Please read this topic first
http://forum.xda-developers.com/show....php?t=2578185

When your battery level is above 80%, the charger changes the way of battery charging. I'm not an expert about energy, so I can't say what exactly it does, but if you google around about chargers, you will know it .
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