In this deep dive, we'll explore each model's specifications and features – including capacity, power output, efficiency, battery technology, thermal management, software, installation, and real-world performance – and then provide a direct comparison table for quick reference. Powerwall is a compact home battery that stores energy generated by solar or from the grid. You can then use your stored energy to power the devices and appliances in your home day and night, during outages or when you want to go off-grid. About 10,500 Tesla Support team by email at. Tesla is recalling around 10,500 of its Powerwall 2 home, backup battery systems due to risk of overheating, burns and fires. " Tesla is recalling around. That's the core of a lawsuit now sitting in San Francisco federal court — after Tesla moved it there from California state court — filed by Nina Mirani, a former regional manager at Tesla Energy 's Hayward, California distribution hub. The system can be managed using the Tesla App to.