Board Thread:Nintendo 3DS/@comment-3448772-20121130005101/@comment-3448772-20121130201718

I can't seem to find the box for it, but I think it is supposed to go for 48 hours.

Since I got it I haven't really had much problems with running out of power. When ever my 3DS would reach the red I would flip the power transfer switch and just flip it back when it stops charging.

And every once in a while instead of transferring the power I would just plug it in instead and I haven't had much problems with the external battery running out.