Chinese inverter maker Growatt has unveiled the SPF 3000T HVM-G2 inverter for off-grid solar power systems. The device consists of a built-in MPPT charge controller, an AC charger, and an inverter ...
He even printed a small magnetic flashlight to reuse the light from the inverter which uses an 18650 cell that can be charged from the big battery in a charger built into the exterior of the pack.