Low battery life on iPod touch after installing iOS 4

Do you have bluetooth on? since the ipod touch rarely,rarely needs bluetooth just keep it off. While it is on it keeps searching and searching for bluetooth devices. Also have location services on can use the battery (some apps you should turn off location services. Some just don't need it and it is just revealing your location-a privacy issue)

I found out how to get back the previous 2G battery life: turn on the new Airplane mode.

Of course, this renders the iPod useless except for playing already-loaded media.

(Sorry for the bad humor in this dreadful situation.)

My battery life was worse after the update to ios4, but I'm seeing better results having shut the unit all the way down once. I hadn't done that since the update, now that I've shut it down and turned it back on, sleep mode isn't eating my battery alive even with the wifi on (the wifi is in low-power mode at that point, it seems to do that in ios4 which is why it looks like it's wandering).

I went to the library with my ipod and it had 60% battery. I barely used it, only for looking up words. When I got home, after about four hours, it had 40%. I thought that I had overcharged it the previous date and started to get worried. Then I looked up problems with the 4.0 update and this came up. I hope that apple quickly fixes the problem so that everything will be fine even with Notifications on. Cause my ipod just died.

Someone already posted the solution. I tested it and it works.

Go to settings, contact/mail/etc... and turn OFF PUSH and set the bottom thing to manual. I also turned off Bluetooth since I never use that.

I took my iPod to work with me. Played games, listened to music and the battery life is actually better now than before the update.

Severely annoying at first with the battery problems, but now I'm a happy camper.

I've noticed that turning my WiFi off when I'm not using it has had a positive effect on my battery life.
Hopefully the ability to kill WiFi when you put your device to sleep will be added in a future update.

Same issue as everyone else. iPod Touch 16Gb 2nd gen. Battery life is tanking now with iOS4. I use it daily for work tracking my email and schedule, now it is shot by 12 noon. Come on Apple!

Just chiming in so this issue can be fixed without having to employ Airplane Mode. I just put my iPod Touch in Airplane Mode. I'm not even sure that changes the fact that I could go days listening to podcasts (with the Wifi on) without draining the battery as much as happens now overnight in sleep mode. Please fix. Thank you.

Is there any response from Apple yet? Just fully charged my Ipod, went to bed and woke up with no battery.

Is anyone bothering to read? GO INTO SETTINGS> MAIL/CONTACTS.

TURN OFF PUSH and set notifications to MANUAL.

TURN OFF BLUETOOTH.

Problem solved.

I already had turned off push notifications but didn't see any improvement until I turned WiFi off.

OS 4 killed my 2G 16Gb Touch battery life as well. I have mail push (even though I don't use it for e-mail), Bluetooth, and Location Services all off, but there hasn't been any improvement. I'll try Wi-Fi next.

So the solution to the problem is to turn off "Push" and "wifi" when not needed.

BS....those are two things I need 24/7 and there was not a problem BEFORE O/S 4.

Apple need to address the battery drain asap, end users should not have to restrict their usage of the product to make it functional for any length of time.

Pre-O/S 4 I got 4-5 days from a full charge, now I only get 10 hours. Way to render my hardware completely useless Apple.

FIX THIS PROBLEM NOW !!!!

Had the battery problem after installing iOS4. Turned off "push" in Mail (it is on by default). No more problems with battery discharging.
If you need "push" for Mail, charge your iPod every day!

Same issue here...

iPod Touch Gen2 16GB, 2 Minute till sleep, 1 Hr Push settings, Bluetooth off, and brightness manually set to about the 30% mark.

Before iOS 4.0 I could go several days without a battery charge. It now always has a dead battery in the morning when I wake up. With the previous OS, I always left wifi on before and did not have problems. Now you can almost see the battery draining.

Other than that, the only problem I have had with 4.0 is sometimes there is no audio (no music, no game sounds, no "clicks", nothing...) when it wakes from sleep even if the volume bar shows it is turned up.