Thanks for talking with me i talked to josh about battery room have planty room to run 8000 im not mad about wrong battery or at yall really happy with you just digusted with having to pay %20 to return them just and man i tried researching them thats why im on this site i called probally 15 different places and no one really said you need atleast this size battery for that motor but i should have looked more i will be back with you for all my battery needs from here on out you the only person i talked to that will explain something and i dont want to run them in series try to keep weight down just only want to run 1 at a time