Lost 40% battery while phone was off!

[satch69]

any variations in ambient temperature? I know it's summer...but sometimes, keeping it in a cold room could lower the battery power. Anytime I go skiing and leave my phone in my car, it takes forever to get back to a normal charge (without being plugged in, simply achieving a normal ambient temp)

 

[mcantu]

I find it very hard to believe that you have a Nexus S 4G with ICS that gets that many hours of battery life.

And I've done the same factory reset (after installing ICS) and my battery life still sucks.

i have a feeling that the improved battery life might have to do with an app(s) that i havent used since the factory restore; and since i havent used it, its not keeping the phone from sleeping when the screen is off

 

[6tr6tr]

i have a feeling that the improved battery life might have to do with an app(s) that i havent used since the factory restore; and since i havent used it, its not keeping the phone from sleeping when the screen is off

Hmmm, mine always has "Android System" taking up a huge chunk. I think that's what's killing the battery, but I have no idea how to figure out why it runs so much and how to stop it.