I turned a simple toolbox into a 100 amp hour, 600 watt solar-capable battery box. I also go over all the internal components step by. Building a weatherproof DIY solar generator involves mounting and wiring a battery, charge controller, inverter, trickle charger, and fusing inside a weatherproof case. Then all the relevant input and output sockets are wired and mounted on the outside of the case where they are easily accessible. more Audio tracks for some languages were automatically. In this article, I will show you how to make a DIY solar generator. Choose a battery You can purchase a battery or make your own LiFePO4 battery. In my case, I made my own battery.