I saw a video of the summit, looked for more videos, OMG i had to have one. I ordered one (green), will be here tomorrow. This is my first ever real R/C electric. I did some gas airplane stuff years ago. Any way, i did SOME (not enough) research and knew i wanted to upgrade to LiPo batteries. I found what i thought i wanted on eBay, purchased them and a charger. Now, i think i may have messed up. What i bought are.....5000mAh, 3s1p/11.1v/3cell, 25c-50c. The guy said that they FIT great in the summit and eRevo. What i did not read (my own fault) is that they WORK great in the summit/eRevo WITH mamba monster upgrades. Then i noticed that they would be at @ 22.2 volts in series. Now i am so confused, and have so many questions. First and most important is...Can i run these batteries in a STOCK summit with out hurting it? Summit speed control rated at 16.8 volts. 2nd ? Can they be hooked up so they only output 11.1 volts? 3rd? Does the stock traxxas setup install the batteries in series or is that a mod that is done? 4th? If these wont work, what battery specs should i look for to get the most bang for buck? I am looking for EXTRA run time and speed. As already stated i am new to R/C electrics so please overlook my ignorance and offer any help you can. This is my first post and im sure not my last. Thanks so much!!!!