I ordered 2 of these last month, and WOW is all I can say! I have been out of the RC hobby for 10 years, but I can tell you that my Tamiya TA03 never moved this fast on the old 1500 mAh Batteries. These have Lots of power, long run times, and are able to take plenty of current when charging. Make sure you change the Tamiya connectors to Deans or something that can handle more juice without overheating. Enjoy!