I am using Electronize 30A ESC's for the motors and this Lipo...

http://ElectriFlyer.co.uk/gens-ace-4s1p-4000mah-30c/

For the Weapon its a Robochallenge Battle switch linked to a 90A Solidstate relay so its off or full throttle. And this is the Pack...

http://ElectriFlyer.co.uk/gens-ace-6s1p-4000mah-30c/ (Ordered the last one )