mash the space button to charge the battery! try not to overcharge it though, the batteries are a little sensitive. also, the last guy on the job may have installed some kind of virus so avoid pressing the H key on your keyboard
I'm working on a big game and I'm experimenting with two battery charge types hope you enjoy this little slice pf the game. try out the other one and tell me which one is better. This games purpose may be different in the main game so expect changes upon release