*I got a motor and its on a 9 volt battery with a 12volt input. I need more power!! if I added another ,9volt battery to the mix will it give me more power? Keep in mind that there is a acircuit board that would fry with anything over 12 volts. Any suggestions?
You can connect two or more 9V battery parallel (+ve to +ve and –ve to -ve. This will add up the current capacity of the battery without adding the voltage.