Battery Drain When Off

gloster

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My Droid is consuming significant battery when powered down. Last night my battery was at around 60% when I powered down. Nine hours later, it was at critical when I tried to power up.

I am running the Team Chaos Froyo and a 900mhz p3 kernel.

Has anyone else experienced this and/or have ideas on the cause?

Thanks
 

hookbill

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My Droid is consuming significant battery when powered down. Last night my battery was at around 60% when I powered down. Nine hours later, it was at critical when I tried to power up.

I am running the Team Chaos Froyo and a 900mhz p3 kernel.

Has anyone else experienced this and/or have ideas on the cause?

Thanks

What did your battery usage say under your about phone in the settings?
 
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gloster

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What did your battery usage say under your about phone in the settings?

It's only giving me stats since reboot. So I have no info about during the powered-down time. I know Spare Parts will give info for all time, but that doesn't help either. Any tools which will give me battery usage over a user-specified timer period? Then again, not sure if any tool can give accurate information for usage when the phone is powered down.
 

Skull One

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I am going to assume you mean the phone is physically being turned off and that you are using a 2.1 based ROM.

The Android OS tries to predict battery usage based on past history. When you turned the phone back on it saw X hours had gone by and assumed where the battery should be. This is actually normal from my testing and observations over the last 4 months.

Once you plug the phone back in and allow it to charge for 30 minutes, you could do a reboot and watch the other side of the coin happen. It will jump in charge level. Again, it is the OS trying to predict but a second system also kicks in during a charging reboot that actually reads the real battery level. Once it sees this new higher level, that is what the OS starts reporting. And magically you could go from 20% to 60% battery charge in less than 3 minutes.

I haven't tested this under 2.2 yet but I am going to assume they haven't worked on that.
 
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gloster

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I am going to assume you mean the phone is physically being turned off and that you are using a 2.1 based ROM.

The Android OS tries to predict battery usage based on past history. When you turned the phone back on it saw X hours had gone by and assumed where the battery should be. This is actually normal from my testing and observations over the last 4 months.

Once you plug the phone back in and allow it to charge for 30 minutes, you could do a reboot and watch the other side of the coin happen. It will jump in charge level. Again, it is the OS trying to predict but a second system also kicks in during a charging reboot that actually reads the real battery level. Once it sees this new higher level, that is what the OS starts reporting. And magically you could go from 20% to 60% battery charge in less than 3 minutes.

I haven't tested this under 2.2 yet but I am going to assume they haven't worked on that.

Skull, thanks. I'll look to see the artificial jump from the predicted level to actual.

I am running the Team Chaos Froyo ROM. I did mean when the phone is physically turned off.
 

Skull One

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I am going to assume you mean the phone is physically being turned off and that you are using a 2.1 based ROM.

The Android OS tries to predict battery usage based on past history. When you turned the phone back on it saw X hours had gone by and assumed where the battery should be. This is actually normal from my testing and observations over the last 4 months.

Once you plug the phone back in and allow it to charge for 30 minutes, you could do a reboot and watch the other side of the coin happen. It will jump in charge level. Again, it is the OS trying to predict but a second system also kicks in during a charging reboot that actually reads the real battery level. Once it sees this new higher level, that is what the OS starts reporting. And magically you could go from 20% to 60% battery charge in less than 3 minutes.

I haven't tested this under 2.2 yet but I am going to assume they haven't worked on that.

Skull, thanks. I'll look to see the artificial jump from the predicted level to actual.

I am running the Team Chaos Froyo ROM. I did mean when the phone is physically turned off.

Looks like my assumption is correct. They expect the phone to be on 24/7 even under 2.2.

Let me know your results. I always like independent confirmation on things of this nature.
 
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gloster

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I finished charging my phone. I checked the status shows the battery at 100%. I have now taken it off the charger and then powered down. I'm going to wait an hour and then turn it back on.
 
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