3 ms·Do they also charge and balance the batteries, or is that something that you need to do separately?by teruakohatu 4y agoDo they also charge and balance the batteries, or is that something that you need to do separately?b112 4y agoAlso, do they have a config to stop pulling power, before draining the battery flat?rightbyte 4y agoI guess not since this is hacking together things outside of their intended purpose. Look in boat stores for battery charge level protection breakers.