Hi, u can get batteries with a receiver servo style plug on or if using a separate speed controller the data cable from the speedo to the receiver will provide it with power. There are two other bits of info you should know. The first is join the ant forum mentioned above and they will explain everything. The second is that the same website sells a kit with the electrics prewired so you can literally just tie wrap the stuff into your own body n get fighting. Another thing is that a lad on here called rapidrory makes premade electrical setups for not much money. Any of these options are a good start.