B2 battery is a high voltage lithium battery(LiFePO4) of 5.12kWh. The B2 Battery is in modular design and is expandable from 5.12 to 25kWh. It is compatible with SAJ low-voltage storage solar products. Solar Victoria $8,800 interest-free battery loans available to help you reduce the upfront cost of installing a battery on your home. Ask us how! Includes Hybrid Inverter. Price is fully installed, including GST and includes black-out power protection.