The Enphase Encharge 3 battery is reliable, smart, simple, and safe. It provides the lowest lifetime energy costs with backup capability for both new and retrofit solar customers. As an installer, you can quickly design the right system size to meet the needs of the homeowner. The Encharge 3 all-in-one AC-coupled storage system provides a total usable energy capacity of 3.4kWh. It features four embedded grid-forming microinverters that provide great flexibility in starting small and adding incremental capacity.