Jay-I can see some problems with this system. Lets say you go to a lake and use your batteries all day and run them down. But the drive home is only 1/2 hr or an hour-not long enought to fully charge them back up. So when you get home you still have to lug them inside and finish the charge. Because if you don't fully charge up the battery , it will degrade it and significantly shorten the life of the battery. Now if the charging system is efficient enough that a 1 hr drive home is long enough to fully charge those batteries, no problems and you're good to go.