The power coming from your stator is AC. If you run a battery will need a DC reg/rectifier. The stator you bought is 35 watts max and not very reliable. The compact battery that Baja designs sells that looks like 10 AA batteries will not keep up if you are drawing close to 35 watts. The Turn Tech 2.5 is sweet. But, I am not sure 35 watts will keep it charged well. I built a battery tray that fits in my airbox with my rectifier. There is another option for power too. I have posted loads of info on. I have not had any problems and puts out 100 watts for lights. So, It really depends on what you are doing and how much light you want.
Good Luck
Alex