The supervisor at work, that I mentioned in my last post, let me borrow two of his fully charged lipo batteries for a night or two. They are both 2S Venom 5000mah 40c hard case packs. I just got back from running one of them. I'm impressed. I'm not blown away. I felt that overall my speed was the same...maybe slower actually. However, the punch was really there. I could pull wheelies on command at nearly any speed. Also, my run time was great. I didn't find myself feeling empty like I didn't get enough time to have fun. I think I'm going to buy one of these batteries and an 11.1 as well.