Review About Gens ace hardcase 5000mAh lipo 2S1P 50C/100C 7.4v lipo battery I've had this battery for a few weeks now and have used it daily. I can honestly say this battery straight up smokes the competition. I've been racing RC's for years now and have always stuck with Traxxas and Venom batteries. I've never had any issues with either brand but i never felt like i got much run time out of them. I decided to grab this Gens Ace battery after reading online that they are reliable and cost efficient. I was not disappointed. In fact i was left shocked. I use this battery on a Rustler VXL and with my current gearing i used tp get roughly 30 minutes of run time and a top speed of 57mph. With the Gens Ace battery, at minimum i get 45 minutes of run time and the most I've gotten was a little over 1 hour. What i was most impressed about was the new top speed of 64mph. Overall this is great battery and i have no complaints.