Is my battery toast?

[BrianG]

If it puffed, get rid of it. Although, if you have only one bad cell, you could reconfigure it as a 3s pack. Not ideal, but better than throwing the whole thing away...

Thanks guy but the battery bit the dust today,lucky i had it in a metal box when
i got back from work i went to check it out open up the lid and sure enough it went
poof! Man what smell.Lucky it was not fully charged it could have been worse.