World’s Smartest Lithium battery for longer power backup, higher life cycle, fast charging and #solar compatible, extra long life, and extra energy.Available Capacities:3.5 kWh8.9 kWh11.2 kWh16.8 kWh22.4 kWh33.6 kWh55.0 kWh For more details visit Lithium-ion Battery Li-Rack Ec...