What if Brutus used no batteries at all? instead it could rely on a kill/battery system where it could gain charge from damage done, so if you hit a nice railgun shot the drone could be powered for an extra 30 seconds? It wouldn't be that OP as it is arguably one of the worse drones, and would be more economical for new players (like me) to try out drones and actually have a chance against a supply-spam player, I personally feel that the game is tipping the balance of Unplayable for F2P's. It's just an idea though.