ok thank's DAVE H for ya input..... i might do that ill programme the discharge abit higher on my castle card so my battery will obviously shut down quicker hence giving me longer life cause these thing's do take a beating i love the whole electric thing with RC cause i gave up on nitro long ago, but i still need to learn more, electric can be confusing i'm sure i'm not the only one out there who think's so ... i often wonder who was the genious behind the LIPO battery.