Antigravity batteries has been around for years. I know that early reviews were very good, but other companies like Battleborn spent way more money marketing their brand, and Antigravity never spent much for advertising. I haven't seen any recent reviews, so couldn't speak to their quality now. Many companies start out making a great product, but then after their reputation is solid, start using cheap components or labor and the quality slips. Not saying that is the case here, but it is something to be aware of.
