[rrritchey]

Hi Bodywerks,
The common ground problem has been around a very long time, anyone that has ever used two batteries with a receiver has run into this. We did not feel it was necessary to hit people over the head with warnings. Most people "should" be familiar with it now. You CAN charge one battery at a time even with both batteries connected. You CANNOT charge both batteries at once with a single dual-output charger or two separate chargers if they cannot handle the common ground system. These are rules. I can get technical on why these are the rules if you like. Let me know.