I am running the trailtech batter: 12V 3700 mAh NiMH Battery Also trailtech reg/rec
http://www.trailtech.net/040-BATT3.7.html
The stator that i am running is a Electrosports 250W
http://www.electrosport.com/atvs/yamaha/yfz350-banshee-87-94/lighting-stator-yamaha-yfz350-banshee-87-94-high-output.html