I was quickly charging LiPo batts for the M-15 this morning and on one charger I started to plug the balance lead into side of charger in the wrong direction (upside down). I know, impossible, but the leads were able to touch and I got a slight spark. Immediately pulled power to charger. Unplugged unit from batt, and replugged batt correctly to charger. I showed a row of four red lights for cel balance, and a constant red light for condition. Not sure what to do, I unplugged batt from charger, and attached another battery to it. Same light configuration. Keeping battery on charger. lights are still all red. Charger a little warm. Been that way for 1/2 hr. What now?