... UNLOOSEN THE SCREWS ON THE CORNER ,PUT IN ONE 24AH BATTERY, connect two red lines to the positive terminal of ... battery and the other two green line to the negative terminal 1,Open ... the case and put it in the sun to charge the battery. It is ... UNLOOSEN THE SCREWS ON THE CORNER ,PUT IN ONE 24AH BATTERY, connect two red lines to the positive terminal of ...