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EcoFlowExpansion batteryLiFePO4

DELTA 2 Max Smart Extra Battery

Name: DELTA 2 Max Smart Extra Battery
Brand: EcoFlow
Price: 699.00 USD
Availability: InStock

Expandable 2048Wh LFP battery that triples capacity of DELTA 2, DELTA Max and DELTA 2 Max systems.

Capacity

2,048 Wh

Cycle life

3,000

Warranty

5 yr

Best price

Updated 3h ago

$699$1,399

−$700 (50%)

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Price history · 90 days

EcoFlow Direct

$699

90-day low

$699 (2026-05-06)

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Runtime predictions for your loads

Based on 2,048 Wh capacity · 95% LiFePO4 DoD · 90% AC inverter efficiency. Phase-1 uses constant-load math; time-resolved multi-day SOC simulation is the Phase-2 north star.

Load profile	Continuous draw	Runtime estimate	% of 48hr target
CPAP only (overnight)	60W	1.2 days	61%
Fridge only (cycle-averaged)	70W	1.0 days	52%
Wifi router + LED lights	55W	1.3 days	66%
Your full continuous load (215W)	215W	8.1 hr	17%
Microwave + base load (peak)	1300W	1.3 hr	3%
Window AC 8,000 BTU (avg)	700W	2.5 hr	5%

How DELTA 2 Max Smart Extra Battery compares to alternatives

DELTA 2 Max Smart Extra Battery specs verified from automated extraction with cross-source verification. Alternatives marked “pending verify” haven't been through the verification pipeline yet.

Capacity

DELTA 2 Max Smart Extra Battery2,048 Wh