Home Battery System Guidesonnen makes the sonnenCore residential battery. It targets home backup, self consumption, and rate arbitrage. The unit uses LFP chemistry and comes in AC or DC configurations.
Capacity and Power Output
EnergySage lists 10 kWh of usable capacity for the sonnenCore. The battery comes in a single size in this generation.
The sonnenCore delivers 4.8 kW of continuous power. sonnen lists a peak power rating of 8.6 kW for short duration loads.
The sonnenCore uses a Lithium Iron Phosphate battery rather than a traditional nickel based lithium-ion cell. LFP is chosen for longer life and safety.
Efficiency and Warranty
EnergySage lists a roundtrip efficiency of 85% for the sonnenCore. That describes energy returned versus energy stored.
sonnen backs the sonnenCore with a warranty listed at 10 years and 10,000 cycles. The high cycle figure reflects the durability claim for LFP cells.