Mercedes teamed up with Vivint Solar to create a new home battery system, similar to the Tesla Powerwall, designed to harness and store power generated by your solar array for powering your home. First released in Europe & South Africa, the Benz batteries will soon be available in U.S. markets. Functional for off-grid power as well as home backup power, the Benz batteries are offered in models ranging from 2.5–20 kWh capacity.