i would also go right to lipos, i have been doing nimhs my whole life, and still am. You can buy (2) 2s zippy 20c 5000mah lipos for 60 bucks. And you could buy a hobbycity lipo charger for 50 bucks.. thats 110 bucks. Two nimh 5000mah batts will cost you 120 bucks.. if made from cheappacks.com or use venom ones, which i reccomend dont buy venom