This subreddit is dedicated to emergency preparedness. I cannot imagine an emergency situation in which an average citizen would need to build their own solar controller. Having a solar system can certainly contribute to household resilience and emergency preparedness. Solar controllers are available for as little as $10 on some online marketplaces.

That said, a solar controller is essentially a simple switch that cuts off the power when the battery is full. You could even make one yourself using basic materials like wood and wires—no electronics required.

I cannot imagine an emergency situation in which an average citizen would need to build their own solar controller. Having a solar system can certainly contribute to household resilience and emergency preparedness. Solar controllers are available for as little as $10 on some online marketplaces.

That said, a solar charge controller is essentially a simple switch that cuts off the power when the battery is full. You could even make one yourself using basic materials like wood and wires - no electronics required.