Extra 2764.8Wh battery for BLUETTI's Apex 300, with 6000+ cycle life.
Our own read for home backup during a power outage, comparable across units in the catalog. Not Amazon buyers' rating. How we score →
Double the cycle life of most extra batteries in the catalog.
Best use case
Anyone who already has an Apex 300 and confirmed they need to double its capacity.
Doubles the Apex 300's capacity with an extra 2764.8 Wh, and sustains 6000+ cycles — double the lifespan of most of EcoFlow's extra batteries. It has its own USB port, so it works as a giant power bank even detached from the station.
It's a new product, a companion to a recently launched Apex 300.
Ideal for: Anyone who already has an Apex 300 and confirmed they need to double its capacity.
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EcoFlowExtra 3600Wh battery for the DELTA Pro — doubles its capacity. With 2 extra batteries it reaches 10.8 kWh.
EcoFlowExtra 2048Wh battery for the DELTA 2 Max — you can add up to 2 to reach 6144Wh total.
EcoFlowExtra 4096Wh battery for the DELTA Pro 3 — same capacity as the station, with the same 5-year warranty.
BLUETTI Extra Battery B300K 2765Wh