How to extend battery life.

Hey, that does work well.  The search box even offered the completion after I typed Philipp.

For some unknown reason, my 3500 mAH battery life is in the toilet again.  The Dec. update caused my battery life to drop dramatically.  I did all of the suggested tips to extend battery life but nothing seemed to work.  Eventually, it seemed to resolve on its own.  A couple of days ago my phone was acting glitchy, so I turned it off and did a battery pull.  I updated my profile and PRL yesterday.  Now the battery seems to be charging slower and is draining fast.  Took it off the charger and in 15 minutes, it discharged from 93% to 68%!  Looked at battery usage and Android is using 55%, cell standy is about 25%.  I don't know what's going on, but my battery life sucks again.

Good tip that may or may not make a difference (see our Battery FAQ regarding the indicator and its approximation). Been mentioned before a bunch of times but thanks for the input.

I don't yell at those who are legitimately trying to help. You should know that.

Had been getting good battery life from using all the tips found in this forum.  All of sudden the battery drains quickly during the day when not even being used.  Have had some nights where the phone is charging all night long and is still not fully charged in the morning.  Tried switching chargers, even tried a different battery, but can't seem to identify the problem.

I've read/scanned most of the battery-related posts (didn't read every single word on all 24 pages of posts though).  I've searched, read the FAQs, tried the battery conditioning tips, turned off Background, Wi-Fi, 4G, Bluetooth, GPS, Mobile, etc when not in use; updated PRL.  Phone is not rooted.  Mostly used for text, email, internet, but probably a light to medium user in comparison to most.

Any thoughts on what might be causing this problem?  Tips to fix it?  Any help would be appreciated.  Thanks!

My Evo 4G has been acting strange for a few weeks now: battery life getting short and non-responsive in some apps. Today, I noticed that it was getting very warm in my pocket, even though on standby, and when I checked CPU usage, it was constantly 100%. At first, I suspected the system upgrade, but then I remembered that it was mostly non-responsive in the Camera app, especially when loading pictures. So I started suspecting the SD card. I then simply took out the current SD card and put a different one in. Immediately, the problems disappeared. Just wanted to share this, in case somebody else has similar problems.

Well I don't post much these days but I got a story to tell. Yesterday, thanksgiving of all days my battery went dead, not just drained but near death as many of you have described in these threads. It barely kept a charge and took hours just to get to 50%. And then if you use it it'll be in the red in 15 minutes! What really let me know something was wrong was that the battery would not charge while I used the phone, even got a message that the charge was not powerful enough to support usage.

So I went online and start looking at battery prices, good ol Amazon.com, so many reviews were mixed on buying batteries, fakes, imitations, used not new, wrong battery, sent the battery for the incredible not the Evo! It was crazy trying to decide! Eventually I went and ordered one for $1.75. Not expecting much but even an imitation would be better than what I got right now!

Then I decided to visit my local sprint store where I hear a new battery could cost up to $40! I figured I'd take my phone and charger and get everything checked out. I let the tech know my battery was acting up, he tested it, agreed it was bad, pulls out a brands new factory sealed battery from the plastic, handed it to me and sent me on my merry way!! So woohoo a brand new battery straight from the sprint store! No $40 fee, no insurance issue, no how old is the phone, normal wear and tear talk!

So it was a good day, dont underestimate the value of taking it in to the store, may save you money and the worry!