Hi Martin!
I also experienced this case last week but it had nothing in common
with OTA13 I think (I also use e4.5 krillin with two sim cards). I
fell in love with this phone because of the battery that hold even for
a week if nobody called me. Now I need to find my charger every 3-4
days as You wrote. Last week however I was losing about 50% capacity
per day. Until the reboot. After reboot I'm loosing again about
15%-20% per day. The phone load to 99% quite normal. Then the very
last 1% needs longer till the battery is full.
Now a bit of my experience and observation of all Li-ion batteries.
Before the week I mentioned above I discharged the battery below 20%.
As I read many times and experienced on many devices (especially Nokia
phones that used to have great batteries that never died) Li-ion
doesn't like to be brought under the 20-30% level. Every time I went
with my Nokia to the 20% or below, battery lasted shorter period of
time before I connected it to a charger at over 50-60%. My tip also
for You would be to reboot the phone and connect it to the charger
every time You see the battery state goes under this 50-60%. You can
also leave the phone connected to the charger when it is full. It
seems to harm only for longer periods of time in notebooks. I know
people and did it myself who always left their phone connected for a
whole night and didn't notice that battery died younger through
overcharging. Actually I never experienced overcharging in a phone. I
think You'd have to replug it every time when You see something about
95% and then hold it connected for a charge long hours long.
Try my tip with charging every time over 50-60% and a bit
"overcharging" instead of disconnecting from a charger instantly when
You see the battery is full.
Another theory is that a 2A charger is better than a 1A. My Nexus 5
which has a pretty weak battery is a great testing device. I noticed
it discharges longer when I charge it with an original 1A charger and
I'm not sure if the 2A charger is not the reason why it hardly makes
it through a day. I'd have to start to charge it now with USB 2.0
500mA to check if the experienced theory is right if its battery ain't
already "impaired" too much.
I read many theories abut batteries and at some points it never
reaffirmed my experiences. I one article I read recently was told that
the best capacity of Li-ion batteries is between 30-40% till 90%. My
Nexus always lost the first 10% from 100 to 90 in a blink of an eye.
If You'll try something, share Your experiences. It is pretty
interesting if You confirm my theory. Last week I thought already that
discharging under 10% was my biggest mistake and the battery will
never as strong again as before. But I made it and as I said, I lose
again about 15-20% per day, not 50%. I didn't notice OTA-13 changed
anything.
Best regards
Marcin
------------------------------------------------------------------------
*From:* Martin Bolte <martinbolte@xxxxxxxxxxxxxx>
*To:* Ubuntu Phone <ubuntu-phone@xxxxxxxxxxxxxxxxxxx>
*Sent:* Friday, October 14, 2016 3:29 PM
*Subject:* [Ubuntu-phone] Power management in OTA 13
Hello all,
since I updated to OTA 13 I observe a change in power management of the
device. It is taking quite longer to load the device and when the
battery had been lasting for 3-4 days until the next reload was
necessary this term was cut by half to 1-2 days currently.
Not sure if someone observed anything similar. I am using a bq Aquaris
e4.5 with Krillin installed on it.
Cheers
Martin
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