lol badass hack Did that with a friend for his kid's electric Big Wheel.. mounted 2 group 24 deep cycles on the back.. wired them i paralell first, worked great and that fucker drove for hours. Charged up the batteries that night.. The next day we wired them in series That fucker took off and hauled ass. The kids loved it. Worked great on the wet asphalt and was super easy to spin the tires and drift since it was either 0% or 100% throttle. Then my other friend's little dipshit kid drove and thought it'd be a good idea to take it off road. Everything was working great until he tried going uphill from a dead stop. It started moving forward, stopped then smoke and flames started coming out of the damn thing!! Ran over there, swooped the kids, and luckiky there was a stick right there on the ground. The wire gauge was so small and it was drawing way too many amps. It got so hot the wires melted - both the positive and negative wires contacted since they were so close together causing an electrical fire. I used the stick to separate the naked wires best I could while my buddy cut the wire from the positive terminal. Thought for a second their scorched blood would be on my hands learned my lesson in proper gauging. Thank god we were there supervising.