EcoFlow's X-Stream charging technology fills the Delta 2 to 80% in 80 minutes. For scenarios where grid power returns intermittently, fast charging is a force multiplier.
| Price | ~$999 |
| Weight | 27 lbs |
| Capacity | 1,024 Wh (expandable) |
| AC Output | 1,800W (2,700W surge) |
| Cycle Life | 3,000+ cycles to 80% |
| Charge Speed | 80% in 80 min (X-Stream) |
| AC Charge Input | 1,200W max |
| Battery Chemistry | LFP (LiFePO4) |
EcoFlow differentiated their product line on one specific feature: charging speed. The Delta 2's X-Stream technology allows AC charging at 1,200W — filling the 1,024Wh battery to 80% in 80 minutes. Competing stations at this capacity require 5-6 hours for the same charge. When grid power is intermittent (scheduled outages, storm intervals), the ability to fill quickly changes the operational calculus.
The Delta 2 uses LiFePO4 (lithium iron phosphate) cells with 3,000+ charge cycles before degrading to 80% capacity. NMC lithium (used in cheaper alternatives) delivers 500-800 cycles. The chemistry choice means the Delta 2 is viable for decade-long use — not a 2-3 year emergency purchase.
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