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charging
adding the battery this way IN SERIES will up the voltage and you should get a lot more RPMs out of the motor, but you also need to up the voltage when you charge it. I did basically two mods to my controller to make that happen. First, I wired the charge pad wires directly to the existing battery terminals inside the controller. Second, I created a slug for one of the AAA batteries out of wood, made solder contacts at either end and wired the slug to a 2-AA battery holder from Radio Shack. The idea was that now I had 3 alkalines in the controller, which does not affect its ablitity to work normally, but now, since the charge pad is wired directly to the batteries, I get a full 4.5 volts to the car.
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