I am using Hastarins 7.6 kernel with ext batt support and Froyostones 3.2 build (Most recent as of Oct 23)
I have done some extensive research, although, i have not yet figured out a way to get an accurate reading, in android, of my extended battery (life percentage)
I have calibrated my battery (charged to 100% w/ phone on, shut off phone and charged until green light, then booted android, then turned off and charged again until green, then turned on and booted android) only to find out that the battery discharges at the same rate as with the original battery all the way down to 0%.... but does not recognize that the battery holds twice as much power. so really, the 100% battery drains to 0% on extended battery but does not recognize that the battery still holds 50% of its power left
i have never deleted my "batterystats.bin" Because i can't find the file anywhere using a root explorer and even recovery, although, i was told that this step is not necessary in calibration.
I have current widget and my draw is around 60mA on standby with BOTH original and extended batteries but It seems the android OS cannot get accurate readings on the extended battery? It cannot multiply the battery meter by 2 so that the drainage is reciprocal to the larger battery, thus resulting in a slower drain (like 10%/hour drain with original battery would equal 5%/hour drain on extended) ?
correct me if i'm wrong somebody please, or am i missing a step (besides deleting the batterstats.bin which i cannot find out how to do even after downloading recovery)
anyone have any information on this ratio?? battery percentage reading and the extended battery? will they ever be compatible for correct readings??
i've got the same problem with a cameron sino 2400 mah battery, but not only on android! i also got the problem on windows mobile (on every radio and rom version).
after removing the battery out of the device, it will show the right percentage of the remaining batterypower, but the batteryindicator is still falling in the speed of the normal battery.
i couldn't find any solution yet, but maybe it's a battery internal problem of the chip inside the battery.
it looks like the device is reloading the battery-chip-data only when plugging in the battery.
can you tell me, if your battery also is a cameron sino battery? or is it an original?
have you recallibrate your battery? Let it drain till 0%, and keep try to turn device on until totally no vibrate, then charge to 100% after 100% turn phone off and charge till green light, unplug and charge with phone off for a few times.
i already calibrated mine many times, but no change in the result.
i have read from anywhere else in the internet, that most people got that problem with chinese extended batterys.
one of that guys ordered a 2300mah extended battery from the manufacturer leicke - looks like it is maybe the same as the original one and he said, the new battery dont have the problem anymore and is working correct.
i ordered the same battery yesterday (for 21,- euro) and i will test it myself. i think the problem is the chip inside the chinese batterys, that will tell the device its a small one.
by the way, my cameron sino 2400mah battery is made of two small batterys that are linked.
i disassembled it!
Thats guy is me ^^ . But I i really dont see the big different between extended and the original . Must i really do the "recalibrate thing " ?
Sent from my HTC HD2 using Tapatalk
update: now i've got the leicke 2300mah battery with backcover and metal kickstand.
cover is fitting 100% and all looks and feels like its made of high quality.
the batterydraining ist detected correct and i dont have to remove the battery to see the current chargelevel.
the problem was that chinese crappy battery!
only one thing for androidusers: because of the most kernels don't support the extended batterys (temperature is reportet wrong and android is shutting down after booting), you need to change to a kernel like hastarin 7.7 or 7.8 that is supporting the extended batterys.
overclocking of the hastarin linux kernel work with overclock-apps, so there is no need for an overclocked kernel.
i'm very happy with that battery and it cost only 21 euro over amazon in germany.
i will never get a cheap chinese battery again
So, is it correct that batteries have some kind of chip in them?
yes, they do contain microcontroller
cheap chinese ripoffs often are just badly designed, made from low-cost cells and are very dangerous to use
So don't be surprised if your 'OEM' seico, chinapower, mugen, or whatever name doesn't hold promised charge or even work as original battery
I've been using Calkulin's v1.1 TnT lite based Rom for more than a day now and my battery level still shows as 100%. I know the battery life with this rom is supposed to be pretty good but it can't be that good. Any ideas how to fix this issue so my battery level reads accurately? I was thinking to run the tab until it dies to reset the battery fuel gauge and see if that helps.
EDIT:
Running the battery down and completely re-charging solved the issue, in case anyone else is having the same problem.
hi.
I am using CM7 now which is great, but since I am going to a trip abroad I need to temporary change to a ROM with GPS, but most inportant, with a great battery life.
I don't need any great performance like CM7, I just need the battery to last long.
Any recommendations?
Thanks.
http://forum.xda-developers.com/showthread.php?t=1105037
from my experience best battery i have on this rom i flashed this rom yesterday and charge it to 100% and run batt calibration it is preinstalled in this rom when you run batt calibration after that unplug your phone from charger and use it till total discharge and do not turn your phone on charge it to 100% again and its ok i've did it and play some games wi fi is enabled always i've use gps for 15 minutes and from yestarday till today so now i have 82% batt so i thing this is the best for batt
oh by the way lag fix is enabled to
Thank you. Do you know if calibrating the battery is useful even if I have one extra battery and I switch between the two batteries if necessery?
I don't know about the two battery thing, but i do agree that Project V have great battery life. Im using Super Dragon Modz kernel OCed to 1.3, and the phone its doing pretty nice till now. I unplugged it like 2 hours ago, and it still show 100%. On CM7, i would be around 75 to 80% by now. Battery life was the reason that i came back to Froyo.
WOW that's great battery life! Thanks a lot.
i don't konw about 2 batteries but calibrating is usefull it's helping 98% bug after unplug and it's greating a new battstat file what is realy nice project v6 is very good rom for battery i did't tried super dragon
I don't see how callibrating the battery helps extend battery life? The battery remains at the same capacity and draining any battery completely shortens the lifespan of the battery. I can see that the system might get a better prediction of battery life... But you get that regardless after using the phone for a few days / week...
Sent from my SGH-T959 using XDA App
When I was on Bi-winning v3, my fully charged battery was ~4240mV, as indicated by Spare Parts app. I've just changed to MIUI lithium and it is only 4191mV when fully charged while plugged in and the voltage drops suddenly to ~4150mV when unplugged. The battery life is still reasonable (76% after 17h of light use). Just very curious, is spare parts in MIUI measuring the voltage differently or is the calibration off? I've tried wiping battery stats and using the battery calibration app but it's still the same. Is there anything else I can do? Thanks!
I bought the 2000mah extended battery kit to my S2. Since the charge is so slow on the S2(about 3-4hours) I can't top it up when I get home before I go out again. So I'm thinking about using the original battery and pop that in when I get home.
But how will the phone and battery indicator react to me constantly switching between two different sized batteries? Will it completely mess it up? Would it help if I wipe the battery stats every time I put in a new battery? Cause I thought a phone needed a couple of charges to learn the capacity of the battery?
Is all i do is to swap battery as needed
Wipe battery stats only if i want to read new battery stats .
Wipe battery stats plays no part in the calibration of SGS2 battery .
jje
no it won't get messed up
Weird, I thought the phone needed to learn the battery before accurately displaying the battery levels.
But then I dont need to worry then.
Thanks for the fast replies!