If you want a high-performance solar battery system that is compact, lightweight, and powerful,  you need to move to high voltage. Just like you won’t go far playing the Formula 1 racing game “F1 2022” on an Intel 80286 processor (introduced to computing in 1982).

High voltage is to power electronics what clock speed is for computers. 

Below is an example of a “solar generator” by 4 Patriots advertised heavily on YouTube and other social media. It operates on a 12 Volt battery system (introduced to automobiles in the 1950s).

The “Generator 2000X” has 2,000 watts of power and 1,612 watts hours of energy storage. The expansion pack above and connected to the system expands storage by 1,344 Wh. Connecting the 12 V expansion pack to the Generator 2000X requires a massive cable that looks like an elephant trunk!

Cables in the PowerBloc are 1,000 Times Thinner Than in a 12 Volt System.

By contrast, the PowerBloc’s energy storage interconnects at 380 V. At that electric potential, the cable required to carry the equivalent power as the “2000X” is a thousand times smaller.

The only way to compact, lightweight, and powerful solar-battery systems is to go to high voltage.