yeah my dad has 3 gens ace packs and they seem to be good, i have read of some not being good though and id be willing to take the risk. I wasnt sure if 6000mah would be too much or not. I have everything i need now, to finish my build and get my car running, aside from batteries, and gens ace seems to disregard me anytime i try and see if they know when they are going to be in stock.