can i upgrade?

[DavidNM]

But isn't there also a battery drain for the wifi? Does the wifi disable itself when the 3G is working?

 

[Superbike81]

Just for reference, I did a test for my last full charge, down to 5%. With Wi-Fi enabled the entire time, screen at 50% brightness, doing a mix of taking notes, studying my flash card app, watching YouTube videos, playing Plants vs Zombies, and browsing the Internet, I got just und 15 hours of actual usage time plus about 4 hours of standy. So Apple greatly under-rated the battery life, so I think you don't have to worry about 3G dropping the battery life to 6 hours.

 

[rorschach23]

i not really worried bout battery. was gonna get a hand-held solar charger anyway. i just want 2 know if i'd b able 2 upgrade w/o selling thru ebay or w/e. i pre-ordered it & got it the 3rd. any help?

 

[gentlefury]

Just for reference, I did a test for my last full charge, down to 5%. With Wi-Fi enabled the entire time, screen at 50% brightness, doing a mix of taking notes, studying my flash card app, watching YouTube videos, playing Plants vs Zombies, and browsing the Internet, I got just und 15 hours of actual usage time plus about 4 hours of standy. So Apple greatly under-rated the battery life, so I think you don't have to worry about 3G dropping the battery life to 6 hours.

I've had similar up times...I think apple rated it at high brightness.

 

[Superbike81]

I saw one guy talking about getting it down to just under 6 hour battery life by playing constant 3D games with everything at max settings, all which downloading and installing apps in the background. Video is on Youtube.