You would think this would work, and they would probably work for a while, but you won't get near the range out of the cart using 12 volt batteries vs 6 volt. The 3 12 volt batteries don't contain enough 'plate area' in them when compared to 6 of the...
Connect the 2 12 volt batteries in parallel. This is with the + of one battery to the + of the second battery and the - of one battery to the - of the other. Connect a normal 12 volt charger to them because you still have 12 volts. Any battery shop o...
It depends on the type of 9 volt battery you are using. Standard carbon-zinc and alkaline batteries that are fresh and new will start out at nearly 10 volts. Most of the devices that use a 9 volt battery will work until the voltage drops to about 7.2...