Extra 5120Wh battery, the largest capacity in the catalog. Compatible with multiple BLUETTI stations. 45 kg.
Our own read for home backup during a power outage, comparable across units in the catalog. Not Amazon buyers' rating. How we score →
The largest-capacity extra battery in the entire catalog.
Best use case
Anyone building a large whole-house backup system who needs maximum expansion capacity.
It's the largest-capacity extra battery in the entire catalog: 5120 Wh per unit, compatible with several BLUETTI stations (not just the Apex 300). Scaling with several units and stations, BLUETTI claims up to 100 kWh — weeks of backup for an entire house.
At 45 kg, it's one of the heaviest components in the entire catalog — designed for fixed installation, not for moving around.
Ideal for: Anyone building a large whole-house backup system who needs maximum expansion capacity.
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EcoFlowExtra 4096Wh battery for the DELTA Pro 3 — same capacity as the station, with the same 5-year warranty.
EcoFlowExtra 6144Wh battery for the DELTA Pro Ultra or Ultra X — same capacity as the base station. 50.7 kg.
EcoFlowExtra 3600Wh battery for the DELTA Pro — doubles its capacity. With 2 extra batteries it reaches 10.8 kWh.
BLUETTI Extra Battery B500K 5120Wh