I have 3 mk1 chargers, 5 mk1 batteries, 1 don't move on belts, 1 solar panel, 2 legs, and 2 mk1 roboports in a mk 1 power armor. I swear I have less battery time then when I was using all solar power. When I am not in the range of power and not using bots or moving I watch my energy drain, which I don't think is correct.
