The battery (now batteries) stay charged if removed from the computer. As I mentioned, it's my opinion that it would be unwise to leave them unwrapped while traveling. I'm probably just in the "Why should I have to?" mood when it comes to unwrapping a battery and inserting it, just to show the TSA and others that it really is a computer...bad enough just having to click it on.
I've just fired it up after a prolonged period with the battery removed, and it's fine. Just like any other computer.
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What the heck is going on in the computer that needs that amount of power? Not a lot, cos I can't see the difference when I remove the battery.
I'm trying to use it just to talk to as per my other thread. Now I really want to