Hi, I recently purchased three new 5000 mah NiMH batteries for my slash 2X4 but i ran into a little problem. I have two stock chargers that came with my two slash 2X4's. i plugged in all of the batteries into the two chargers and everything was fine. i had used the batteries and chargers a couple times before and they were fine until yesterday. One of the batteries was plugged in to the charger for a long time and the light on the charger was still red so i unplugged it and put it in my slash 2X4 to see if it would work but it didn't have enough power to move the car and the whole system just shut down after 10 seconds, so i plugged in the battery that was left over into the same charger thinking that it was the first battery that was the problem, but the same problem happened so i was almost positive that it was the charger that was the problem. I threw away the charger because i had another one and i knew this charger was working fine because the charger light turned green and it worked on my car perfectly.so i hooked up one of the batteries that were not working to the good charger and the light stayed red and the same problem happened for both of the bad batteries. But I know that the charger works fine because my other battery that was hooked up to it is working. So is it possible that the bad charger damaged and permanently ruined the two batteries?