It seems the batteries are a crapshoot. you may very well get another lemon. I'd say your best bet is to go ahead and spend 10 bucks and order a name-brand battery. I plan on purchasing 2 batteries. This way, I'll have 2 extras, fully charged, for long trips. This will also be insurance against future battery failure.
In any case, I would not see this as being Astak's fault, not that anyone is claiming such. After all, Jinke decided to put cheap batteries in the devices. It's only fair to assume a crappy one would come through occasionally. Although it sucks when you're on the end of the crapstick.
