Sudden battery loss.

[ntshkr]

My wife was talking on the phone with a reported very good battery strength when the phone just shut down. This is the first time this happened. Any ideas? See screenshot.

[Steve Punter]

I've seen my phone get "stuck" at a particular battery reading for a long period of time once. In my case however, the condition corrected itself when my battery got down to 75%. I haven't seen it happen since, but it seems there might be a bug in the code that will OCCASIONALLY cause the battery meter to fail to update.

[CGY Guy]

You may want to let the battery drain until the phone dies. Then, recharge it to full. Li-Ion batteries have a circuit in them, and it may need to be re-calibrated. It's quite common.

[ntshkr]

Really? Ok I'll try draining it fully, thank you. I didn't think this type of battery had any type of memory of sorts.

[Steveanderson13]

It doesnt

Sent from my DROID BIONIC using HowardForums

[Steve Punter]

I have no idea why this thread has taken this bizarre turn. There is NO WAY a battery would show flat 100% charge and then suddenly fall off a cliff. As I have already noted, there is a bug in the battery charge calculation that causes that reading to "freeze". This is not a battery issue, but rather a software issue.

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[primetechv2]

It doesnt

Sent from my DROID BIONIC using HowardForums

The battery doesn't remember its history, but your phone does. (that's why sdx-developers advises people not to wipe battery statistics.) Using a battery more, makes the phone understand it better.

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[CGY Guy]

Really? Ok I'll try draining it fully, thank you. I didn't think this type of battery had any type of memory of sorts.

Li-Ions have no memory like a Ni-Cad does.They do have a circuit to prevent going under a certain value, and also to protect from over charging. Anyway, try it and see. You have nothing to lose, and it costs nothing to try. Report back on your results.

[nyamo]

Its most likely the fuel gauge going wonky. Sometimes after a large battery stress (reboot, game, what ever else) it will lose track of the voltage and show large drops. Usually after a charge everything is back to normal. If it happens frequently it may be a faulty battery

On my sgs2 sometimes my phone will drop over 30% if im having to reboot frequently

[kogen]

It is not physically possible for the battery to drain that much that fast. all that happens is either a change in the way battery fuel gauge is bring reported or a corruption of the battery stats being kept.