Sorry for the late reply. I was out of the office on Friday. I see the plug now. My apologies, I was thinking of another charger we have that also includes a balance board but wasn't included in the first run. Have you noticed how much capacity was built up in the battery by the end of the charge? While it's possible that there could be a problem with the low voltage detection, unfortunately I don't know much about esc's but I would check the setting on there. Maybe the low voltage cut off is set too high. That would explain the early shut down.