The above pic is an inverter I am getting around to using. Not a great inverter but good for running small things when the power goes out. I have just made a new harness for parallelling of 4 12volt 7AH batteries. I have permenantly soldered the wires to the batteries and used slip connectors(comes apart at the blue tape) so I can change out the batteries by just using another harness. That way I can can throw these onto my bike once I get a new motor.