[Desire HD General] Gangstar8:
Hi guys!

First of all, thanks for the manual.

I have a Sensation XE, almost 2 years old now. Just few days ago flashed with AR HD 7.3 with proper firmware and radio. Phone itself is working like a charm, however, there are two problems: first of all, the battery drain seems very fast and charging it to 100% again takes ridiculously long time (about 10 hours to get 100% battery level). It is actually possible to drain battery faster than to charge it completely.

Okay, I followed the manual to reset the battery, installed Current Widget and I saw that the charging current was very, very low - around 40-50 mA, which seemed weird. I decided to investigate. I did a very long charge, kept it plugged in several hours after the green led went on, then wiped the battery stats through recovery and started the battery drain cycle. This is what happened during the night.

2013/12/30 06:00:11,-77mA,57%,3.828V,22.2°C

2013/12/30 06:05:12,-125mA,57%,3.81V,22.0°C

2013/12/30 06:10:15,-79mA,57%,3.825V,22.2°C

2013/12/30 06:15:17,-91mA,57%,3.822V,22.1°C

2013/12/30 06:20:17,-91mA,57%,3.819V,22.1°C

2013/12/30 06:25:17,-89mA,57%,3.822V,22.2°C

2013/12/30 06:30:20,-89mA,57%,3.822V,22.2°C

2013/12/30 06:35:20,-89mA,57%,3.819V,22.3°C

2013/12/30 06:40:23,-87mA,57%,3.819V,22.2°C

2013/12/30 06:45:23,-147mA,56%,3.798V,22.3°C

2013/12/30 06:50:24,-79mA,56%,3.822V,22.2°C

2013/12/30 06:55:24,-81mA,56%,3.816V,22.3°C

2013/12/30 07:00:26,-81mA,56%,3.816V,22.3°C

2013/12/30 07:05:27,-203mA,56%,3.786V,22.2°C

2013/12/30 07:10:29,-81mA,55%,3.81V,22.4°C

2013/12/30 07:15:30,-155mA,55%,3.798V,22.2°C

2013/12/30 07:20:31,-135mA,55%,3.795V,22.3°C

2013/12/30 07:25:33,-79mA,55%,3.813V,22.3°C

2013/12/30 07:30:35,-79mA,55%,3.813V,22.3°C

2013/12/30 07:35:38,-83mA,55%,3.81V,22.4°C

2013/12/30 07:40:39,-83mA,55%,3.81V,22.4°C

2013/12/30 07:45:41,-79mA,55%,3.81V,22.3°C

2013/12/30 07:50:42,-137mA,53%,3.783V,22.2°C

2013/12/30 07:55:44,-81mA,53%,3.81V,22.2°C

2013/12/30 08:00:46,-81mA,53%,3.81V,22.2°C

the drain current seems to be high with even larger peaks. Wifi was off, mobile data was on.

I checked the largest battery drainers and among top was just screen, cell standby, phone etc. - no particular applications that caused the battery drain very fast. I will try to investigate this more thorough.

However, upon completing the discharge cycle and completely draining the battery, I connected the charger and logged the charging cycle.

In the beginning everything seemed fine

2013/12/30 19:49:20,479mA,1%,3.711V,31.7°C

2013/12/30 19:49:57,257mA,1%,3.69V,33.3°C

2013/12/30 19:50:53,361mA,2%,3.759V,34.1°C

2013/12/30 19:53:00,459mA,2%,3.834V,36.0°C

2013/12/30 19:53:54,323mA,2%,3.54V,35.0°C

2013/12/30 19:56:20,567mA,3%,3.918V,36.4°C

2013/12/30 20:07:15,711mA,9%,4.104V,34.3°C

2013/12/30 20:11:15,699mA,12%,4.134V,33.5°C

and then around ~30% battery the charge current starts to decrease because voltage reaches 4.2 volts.

2013/12/30 20:42:27,459mA,30%,4.2V,29.9°C

2013/12/30 20:48:27,403mA,32%,4.203V,29.2°C

2013/12/30 20:50:49,383mA,33%,4.2V,29.1°C

2013/12/30 20:57:05,333mA,35%,4.203V,28.5°C

2013/12/30 21:05:05,277mA,38%,4.203V,27.7°C

2013/12/30 21:17:17,215mA,40%,4.203V,27.4°C

2013/12/30 21:50:18,101mA,45%,4.203V,25.5°C

2013/12/30 22:06:19,67mA,47%,4.203V,25.3°C

2013/12/30 23:08:16,1mA,53%,4.203V,24.5°C

2013/12/30 23:13:16,0mA,53%,4.203V,24.4°C

2013/12/30 23:17:16,2mA,53%,4.206V,24.4°C

2013/12/31 01:21:01,32mA,65%,4.203V,25.0°C

it was sort of charging at 32mA for quite some time. I decided to check what happens when the charger is unplugged

2013/12/31 02:30:04,38mA,72%,4.203V,25.1°C - charging

2013/12/31 02:30:59,-325mA,72%,4.113V,25.5°C - charger unplugged

as you can see, the actual voltage of the battery is not 4.203V but rather 4.113V when unplugged. Then plugging it back in

2013/12/31 02:31:00,-325mA,72%,4.113V,25.5°C - on battery

2013/12/31 02:31:06,325mA,72%,4.113V,25.5°C - charging (sort of but most likely not)

2013/12/31 02:31:54,325mA,72%,4.113V,25.5°C

2013/12/31 02:31:57,40mA,72%,4.203V,26.5°C

and then it continues to charge at 42 mA for the rest of the time, while voltage being 4.203V the whole time.

2013/12/31 06:09:08,44mA,92%,4.203V,24.7°C

2013/12/31 06:10:08,44mA,93%,4.203V,24.7°C

2013/12/31 06:11:08,44mA,96%,4.203V,24.7°C

2013/12/31 06:12:08,42mA,99%,4.203V,24.7°C

2013/12/31 06:13:08,-42mA,100%,4.203V,24.7°C

the problem is that even though it is showing 4.203V and 100%, it is not. see what happens when the charger in unplugged

2013/12/31 07:12:10,-44mA,100%,4.203V,24.6°C

charger disconnected

2013/12/31 07:13:11,-126mA,100%,4.17V,24.6°C

2013/12/31 07:14:11,-126mA,100%,4.161V,24.5°C

2013/12/31 07:15:11,-130mA,100%,4.158V,24.5°C

2013/12/31 07:16:11,-124mA,100%,4.155V,24.5°C

2013/12/31 07:17:11,-133mA,100%,4.149V,24.5°C

charger connected

2013/12/31 07:18:11,-4mA,100%,4.203V,24.5°C

voila - 4.203V again and still 100%.

I have no clue how to get battery to 4.2 volts after unplugging it.

So, do you have any suggestions as to what to do? It seems that the voltage is dropping a lot when the phone is being used. Does it mean that battery is old and does not have the capacity it once did, thus the voltage drops? Does this mean that the battery will soon die completely? Any suggestions getting the battery fully charged?