Battery meter is inaccurate

[Bond32]

So I know this has been brought up a few times, but I just wanted to confirm that the battery meter is either inaccurate, or bugged. Today mine was at 40%. Checked it in the about screen. Then I did a factory reset, and it suddenly was at 70%. All this happened around 3pm today... Here it is almost 10 now, and my phone is now to 60%. And fyi I noticed this earlier with the stock battery, and now I have the extended battery. Perhaps this will be updated in 2.2.

I guess the bullet point of the story is many people are frustrated with the battery life while others have zero issues. It may just be bugged.

 

[DaRkL3AD3R]

I think it has to do with a file that logs battery usage and scales your percentage left to allow you a better idea when your battery will die.

To put a "percentage remaining" on something like a battery is a really hard thing to do. If I said here right now, you have 90% remaining after minimal use and 5 hours, then out of nowhere you pickup the phone and instantly start playing Angry Birds with the brightness cranked up and with Pandora streaming music over 3G, you can be darn sure that it won't take another 5 hours to hit 80% since you drastically changed your battery drain.

With that said, think about how the system tries to keep up with your usage and translate some almost meaningless number into something you can use. Ie - you wouldn't want your phone to hit absolute dead battery, you'd rather it warn you early. Think of it like your new cars gas tank. I'm almost 99% certain that when you're on Empty, your tank is really not COMPLETELY EMPTY. There may be a gallon or two left. This is the cars way of making sure you are dead certainly going to refill the tank before it becomes dangerously low. Hope you get what I mean. Also 2.2 doesn't fix this.