the battery is fine, i don't think it's the battery, indeed the battery is a little round but it's a case of you know sometimes you get an inflated pack and it's all bad, and sometimes you get one, that is inflated but it's still good, mine's the case where it's still good, i will double check the lvc, i think this esc only give 2 choices it's set at 3.6v i think currently, will go check.