This conversation has been merged. Please reference the main conversation: Battery is warm when not-in-use
Had my 56V 2.0ah Battery stored on a peg board, vertical on its long side. Took it down from the board and felt the button end of it was hot. Other EGO battery (56v 2.5ah) stored the same way was not hot. The 2.0ah hasn't been used in awhile, maybe 30 days. Did I happen to catch it in the middle of the self-discharge cycle? Would that make it hot? If not, any ideas why one is hot and the other isn't? OK to store a battery on its side?