Need Help! Plugged battery in backwards to parallel board

Mark Fuller

New Member
New to the hobby and charging lipos. I understand how to charge but I made a mistake when plugging the batteries in. The parallel board was not plugged into the charger and I plugged in two of the same exact 4s Lipos in the first two ports. When I plugged the 3rd in, I was not paying close attention and it started to go in backwards. I heard a pop and it smoked just a little. The one side of my xt60 is black and where I plugged in is now black. These batteries are Tattu 4S 1550 75 R line. My question is, did I ruin this batter and the whole parallel board and did I ruin the other two batteries as well.

Thanks for the help.
 

You probably damaged the battery that went in backwards but hopefully not the others. Check everything with a volt meter and charge the others individually and make sure they take a full charge. Even if the one that smoked shows good I would be suspicious of it.
 

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