Develop Bugs

[Q] Skyraider 3.3.1 question about battery

My battery seems to drop by 10 percent almost immediately after coming off charger. I read this is a known issue. My question is if I install different kernel will this fix problem? And what would be a good starting one?
Thanks!

That will happen no matter what kernel you have installed. You must bump charge to reach a full 100% charge. Try out different kernels, everyone has their own opinion on which is best. I am using the newest stock HTC kernel and get great battery life, but i also did with Kings BFS Kernel.

Wonder why this can't be fixed?
By bump charge do you mean that you unplug and plug back?

Charge your phone to full with the phone turned on, then power off and charge till the light turns green again.

[Q] Phone won't charge through USB

Is anyone else having this problem? I don't know if it's a 3.70 issue or what. I've been having battery issues since flashing ms' SBC for Netarchy's 4.2.2 More Aggressive kernel, but I hadn't seen anyone else mention this problem. It'll show that it's charging but in reality the battery is slowly draining and you don't find out until you unplug the phone and look at the battery percentage, which really makes it impossible to rely on your phone's alarm if your phone dies in the night. I am using Ziggy's Kernel for Culkin's ROM now so I don't think it would be ms' kernel influencing it since I wiped everything since using it last.

Dacian said:
Is anyone else having this problem? I don't know if it's a 3.70 issue or what. I've been having battery issues since flashing ms' SBC for Netarchy's 4.2.2 More Aggressive kernel, but I hadn't seen anyone else mention this problem. It'll show that it's charging but in reality the battery is slowly draining and you don't find out until you unplug the phone and look at the battery percentage, which really makes it impossible to rely on your phone's alarm if your phone dies in the night. I am using Ziggy's Kernel for Culkin's ROM now so I don't think it would be ms' kernel influencing it since I wiped everything since using it last.
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I have noticed a similar issue using latest stock kernal and have seen major battery drain while tethering.
I have been using the battery monitor widget to track power usage and charge and have not seen a difference between plugged in using the HTC charger or a direct connection to USB other then the same thing you are encountering. The battery just drains faster then it can be charged. I am not sure if this is a hardware issue or just an issue with latest OTA (3.70 combination)
I have a thread I created asking a similar question with a focus on wired tethering.
http://forum.xda-developers.com/showthread.php?t=884540

I'm a bit confused. Are you talking about trickle charging? Meaning, you plug your phone in overnight and then unplug it and start using it and in like 10 minutes your phone is already at 90% by just checking your email or something small?

No, I mean when charging my phone through USB, it doesn't charge, instead it just drains the battery as if I was using it but in fact it is asleep "charging".
Sent from my PC36100 using XDA App

Try resetting your phone. I had this issue a few days ago and it's long since disappeared (so there's a chance it'll go away on it's own). However, didn't ms comment on USB charging problems when he originally posted the SBC kernels?

[Q] Phone won't charge to 100% unless turned off?

I have a problem with my phone hanging at 93-97% when charging. I have to turn it off and within a minute or two it shows that it is fully charged. I'm wondering if anyone has ran across this problem and is it the phone or something else? It does this across all the ROM's and kernel combos that I have used over the last few months and I can't figure it out.

gajendarksky said:
I have a problem with my phone hanging at 93-97% when charging. I have to turn it off and within a minute or two it shows that it is fully charged. I'm wondering if anyone has ran across this problem and is it the phone or something else? It does this across all the ROM's and kernel combos that I have used over the last few months and I can't figure it out.
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I've ran into that a few times, where it would seem to stop charging at around 95 or 96%. I changed to a different kernel and also wiped my battery stats, and that solved my issue. It's odd that it does it on any ROM/kernel combo. It doesn't seem to matter if it's Sense or AOSP? Have you tried wiping your battery stats? If not, give that a try. I'd also wipe cache and dalvik cache at the same time. You want to be charged up to 100% when you wipe the battery stats, btw. If that fails to solve the problem, the next thing I'd personally try out is using a different/new charging cable.

k2buckley said:
I've ran into that a few times, where it would seem to stop charging at around 95 or 96%. I changed to a different kernel and also wiped my battery stats, and that solved my issue. It's odd that it does it on any ROM/kernel combo. It doesn't seem to matter if it's Sense or AOSP? Have you tried wiping your battery stats? If not, give that a try. I'd also wipe cache and dalvik cache at the same time. You want to be charged up to 100% when you wipe the battery stats, btw. If that fails to solve the problem, the next thing I'd personally try out is using a different/new charging cable.
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I've tried all those and no luck. I am totally perplexed as to what it could be, but I will give the battery stats another try, I can't remember if it was fully charged or not. The other thing that I am wondering is if it could be the PRI/NV that might need to be downgraded perhaps? If so, will these be ok with the newer radio?

gajendarksky said:
I've tried all those and no luck. I am totally perplexed as to what it could be, but I will give the battery stats another try, I can't remember if it was fully charged or not. The other thing that I am wondering is if it could be the PRI/NV that might need to be downgraded perhaps? If so, will these be ok with the newer radio?
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You should be able to run the 1.77_003 PRI and NV with the newer radio. When I downgraded my PRI, I also downgraded the radio at the same time, but I don't believe that was necessary. Just be cautious, I believe that the stock htc #15 kernel runs crappy or won't even let the phone boot on the older radios/pri. So if you do downgrade the PRI / Radio, I'd suggest using a custom kernel. All that said, I have never heard of a certain version of a PRI or Radio causing any sort of charging issues like you're having. That is sort of odd. Perhaps it's the battery itself?! Have you tried using a different battery?

I have two batteries that I switch and it does the same thing on both.
Sent from the biggest damn EVO there ever was...

its the evo, its called the way they charge the phones, the only way to get 100 percent charge is using a sbc kernal, otherwise you have a phone that comes off the charger anywhere from 90-100% because thats what the phone is told to do

iitreatedii said:
its the evo, its called the way they charge the phones, the only way to get 100 percent charge is using a sbc kernal, otherwise you have a phone that comes off the charger anywhere from 90-100% because thats what the phone is told to do
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It should still charge to 100%, where the light turns green, even without an SBC kernel. It's true, that the Evo stops charging at a certain point, and it's very possible to take it off the charger anywhere between 90-100%, as you stated. However, when it's plugged in, it should still register full, and the led should still be green. Then once it's unplugged, a rapid decrease will be noticed, as it registers where the actual charge is at.

k2buckley said:
It should still charge to 100%, where the light turns green, even without an SBC kernel. It's true, that the Evo stops charging at a certain point, and it's very possible to take it off the charger anywhere between 90-100%, as you stated. However, when it's plugged in, it should still register full, and the led should still be green. Then once it's unplugged, a rapid decrease will be noticed, as it registers where the actual charge is at.
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The phone will charge to full capacity only when it's turned off only, never when its on. Like I said before, it will charge at a normal rate and then just stop at the 93-97% range for hours until I turn it off and then within a minute or two the light will turn green.

Used sbc kernel and now..

all of the sudden every kernel I use drops from 100% to 94% within just a few minutes even after being charged extra. I was using net's 4.3.4 sbc no havs for awhile and sbc didn't seem to work. went back to sbc #15 and sbc worked for awhile then it just seemed to stop. then decided to use 4.3.4 no sbc no havs and less havs. Already setting at 89% since unpluged 30 mins ago. suggestions??

Probably damaged battery. Look on Amazon you can get a stock OEM Evo battery for under $10.
Sent from yo moms house

didn't damage your battery, you have to recalibrate it. there are a million ways, charge to full, go into recovery, wipe battery stats, then drain it so it won't even turn on and you will be fine.
FYI, my evo never charged to 100% from the day I got it. Non sbc kernels turn off the charger early because of the mV spike.

When you charge w/out an SBC kernel, the charger stops at 100% and doesn't start again until it reaches 90% but it still says 100%. If you're not using SBC, expect a drop of some sort when taking it off the charger until you get to 90%.

alaman68 said:
didn't damage your battery, you have to recalibrate it. there are a million ways, charge to full, go into recovery, wipe battery stats, then drain it so it won't even turn on and you will be fine.
FYI, my evo never charged to 100% from the day I got it. Non sbc kernels turn off the charger early because of the mV spike.
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I will try this and see what happens. Thanks for the suggestion.

To also help with Battery Life you can do these steps exactly: 1) Turn your device ON and Charge the device for 8 hours or more 2) Unplug the device and Turn the phone OFF and charge for 1 hour 3) Unplug the device Turn ON wait 2 minutes and Turn OFF and charge for another hour Your battery life should almost double, we have tested this on our devices and other agents have seen a major difference as well.
this is a copy/paste from another post as well
I used to get all weird at the initial drop too, but the actual life of the battery isn't affected

all you're doing is describing the normal behavior that prompted the SBC kernels to be developed....lol

deathsled said:
all you're doing is describing the normal behavior that prompted the SBC kernels to be developed....lol
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yeah but it wasn't this bad for me before sbc lol

You have to give Kernels some time to adapt to your phone... you can't try it for a day and say OH THIS DOESN'T WORK IT SUCKS

[Q] SBC kernel question...

Ok so I've been trying to figure this out for the past couple weeks but I finally decided to look for some help..
My OEM battery wasnt always chafing so I decided to buy a new one online (same OEM 1500mAh) then I put my new battery in, go into recovery and wipe batt stats, flash tiamat SBC kernel and continue using my phone...well after a couple days I realized that my phone wasn't trickle charging all the way to 0 it would either trickle to about 10 and then hold or it would start discharging while it was still on the charger like I didn't have SBC....I've tried different kernel versions, continuously wiping batt stats and making sure my phone isn't doing anything strange and nothing
I'm currently running the latest MIUI rom with tiamat 3.3.3 with SBC...oh and this also happened when I was running CM7...any input is appreciated
Sent from a MIUIed EVO

When you wipe battery stats are you at 100%? Then let it discharge until it's almost dead? If not, do it again, after it discharges fully, charge it to 100% again without any breaks in charging.
(from... Evo/MIUI/Tapatalk)

Yea I just did that n it seems 2 help out just letting u know

I don't believe you need to wipe battery stats on sbc. But I could be wrong. I would suggest dl the kernel again and reflash.
tim