I had been a religious ATK user in the past and my phone would go about a day and a half on a charge. I started reading these battery threads and saw lots of people saying that you don't need a task killer running and that it actually hurts your battery life.
O.k. I thought, I'll try not using ATK since it was a pain in the butt to hit the button all the time.
After 2 days of not having a task killer working my battery wouldn't even last the day. There was times that my battery would drop 10% in less than an hour. I wasn't doing anything different except letting the apps run like they're supposed to in the background. Usage was the same, I just wasn't using the task killer.
I checked to see what was using the battery the most before and after too. Before "cell standby" was the major user low 30% or so I believe and "Android system" was really low like 12% while using ATK. While NOT using ATK Android System shot up to mid 30% usage and was the major battery drain with cell standby in 2nd place in the mid to upper 20% range.
I did this for a week and it was the same story, full battery (bump charged) at the beginning of the day, down to almost nothing by supper time.
I've since started using a task killer again to kill the apps that keep turning back on that I don't use (VZW navigator, Skype, etc) and I'm back up to a day and a half.
So I don't know what I'm doing wrong since I'm SURE it's all my fault, but I'm back in the task killer user camp.
Sounds like you had an app keeping the phone awake. Typically when android sits at the top, it's simply because the phone is awake, but nothing is really running full tilt. Reboot, don't use the task killer ( If you do not have it set to auto, no need to bother uninstalling just yet...), and give the phone a bit to settle in. Next, check your up and awake times. Press the power button to put the phone to sleep and wait at least 10 mins, though the longer the better. Wake the phone back up, and quickly check the up and awake times. The awake time should have stayed almost the same ( when you press the power button to shut the screen off, the phone should be to sleep within a few seconds, though if you catch it during a sync or so it might take a couple mins. )
If the awake time did go up a fair bit however, you have a rogue app that is preventing the phone from sleeping. Sometimes it's just a setting in the app, a hiccup, or possibly the app is just plain bad. Unfortunately this usually takes some trial and error to figure out what app is misbehaving.
Also, never bother to kill Skype, VZ Navigator or City ID. They do not use power when in standby...and worse yet, they'll just come back ( and they do use power to start up. )
Finally: When your phone is asleep, you should see almost exactly a 1% drain per hour with mild syncs/etc. Even with a lot of syncing, when asleep you should not see more than a 2% drain per hour. This is excluding the first and last 10 percent of your battery, as battery gauges are not reliable past those ( IE Above 90 and below 10 percent. Typically above 90 goes faster than normal, and below 10 goes slower than normal, but it varies...hence being unreliable. )
