RE: Very Bad Store
"How to get rid of a dead battery and get a new one for free, Go to a hobby shop and buy the same battery as the dead one that you over charged for a week. Go home remove the new one from the package and put in the dead one back in. Take the dead on back and say it doesn’t work,fit, or charge and demand your money back."
....and this is why most hobby stores don't take batteries, electronics, software, or open bottles of CA glue back. Store credit was nice of them to offer.