The iPad has everyone thinking about the future of computing, but one of its greatest achievements is what it lets you forget about: battery. We pushed the iPad as hard as we could and got nearly 6 hours of use.
Early reports had the iPad's battery lasting even longer than Apple's 10 hour estimate—up to 11 and 12 hours of continuous video playback in some cases. In our test, during which we alternated between streaming video and playing graphic-intensive games, with Wi-Fi on, brightness at its highest, and the speaker at its loudest setting the entire time, the iPad's battery lasted 5 hours, 54 minutes.
By any measure, these are fantastic times, and they're essential to the success of this new type of device. If the iPad is supposed to replace your books and magazines, you should be able to throw it in your bag and read all day without worrying about a charge. For the iPad, that's a piece of cake. The fact that you can watch four or five feature length films back to back is just a bonus.
In terms of what you'll use it for, the iPad is closer to a laptop than a cell phone. But in terms of when you'll think about plugging it in, it's just the opposite, and that's a beautiful thing.
Here's how our test went:
100% - 0h 0m
0h 45m Gaming (Red Alert)
0h 45m Video (Vimeo)
85% - 1h 30m
0h 45m Video (Netflix)
0h 15m Gaming (Aurora Feint)
61% - 2h 30m
1h 00m Video (Netflix)
44% - 3h 30m
1h 00m Gaming (Plants vs. Zombies HD)
26% - 4h 30m
0h 30m Streaming (Netflix)
0h 30m Gaming (Zen Bound)
9% - 5h 30m
0h 24m Gaming (Plants vs. Zombies)
0% - 5h 54m
It's important to note that our test doesn't in any way invalidate reports of 10 hours of battery life for continuous video playback. With regular usage—watching some video here, surfing the web a little bit there—you can certainly expect to get double digit hours of battery life. We tried to run the iPad's battery down as fast as possible, and perhaps short of continuously spinning every spinnable element in the crazy Elements app, our tests show that you can expect to get at least 6 hours of juice no matter what you're doing. And it's likely that you'll get much more.
As we saw in the FCC pictures, the battery is what takes up most of the space inside the iPad (and what makes it a little bit heavier than you might expect.)