EcoFlow DELTA 2 Max vs DELTA Pro — 2 kWh expandable vs 3.6 kWh home battery
Two EcoFlow expansion rungs: DELTA 2 Max (2,048 Wh · 2,400 W · up to 6,144 Wh) for RV / weekend / whole-fridge, and DELTA Pro (3,600 Wh · 3,600 W · up to 25 kWh system) for home backup. Feature-class honesty, not a winner crown. Prices: check current listing.
Honesty first (read this)
- No invented Wh, watts, or street prices. DELTA 2 Max figures (2,048 Wh LFP, 2,400 W / 4,800 W surge, X-Boost 3,400 W, 1,000 W dual-port solar, 1,800 W AC charging, 23 kg / 50 lb) and DELTA Pro figures (3,600 Wh LFP, 3,600 W / 7,200 W surge, X-Boost 4,500 W, 1,600 W solar 11–150 V, 1,800 W at 120 V / 3,000 W at 240 V AC charging, approx. 45 kg / 99 lb) come from the EcoFlow US product pages.
- Surge is not continuous. X-Boost runs resistive loads at reduced voltage — it is not extra continuous capacity: peak vs continuous.
- DELTA Pro is an older generation. Newer flagship: DELTA Pro 3 vs DELTA 2 Max.
- Expand packs are SKU-specific. DELTA 2 Max takes up to two DELTA 2 Max Smart Extra Batteries (6,144 Wh); DELTA Pro takes up to two DELTA Pro Smart Extra Batteries / Smart Generator — confirm module: expandable vs single.
Nameplate figures below are from manufacturer product / support pages (checked 24 Oct 2026) — not QuietWatt lab tests or electrical / emergency-planning advice. Prices: check current listing. Estimates labelled. Feature-class, not a winner crown.
Axes that actually differ
- Wh / output. 2,048 vs 3,600 Wh; 2,400 vs 3,600 W continuous. Size: what size · fridge runtime.
- Weight / carry. 23 kg (two handles) vs approx. 45 kg (wheels + extendable handle). carry / Wh·kg.
- Solar. 1,000 W (2×500 W, 11–60 V) vs 1,600 W (11–150 V). charging speed.
- Home integration. DELTA Pro lists Smart Home Panel / Double Voltage Hub paths and an EV-station charging option (mfr); DELTA 2 Max is a portable expandable box.
- RV. DELTA Pro has a 12.6 V / 30 A Anderson port (mfr). Either works for RV — confirm outlets on your SKU.
Side-by-side (manufacturer nameplate)
Not a sponsored ranking. Confirm the current listing / label for your region SKU.
| Axis | DELTA 2 Max (2 kWh expandable) | DELTA Pro (3.6 kWh home battery) |
|---|---|---|
| Capacity | 2,048 Wh LFP; up to 6,144 Wh (mfr) | 3,600 Wh LFP; up to 25 kWh system (mfr) |
| AC continuous | 2,400 W; 4,800 W surge; X-Boost 3,400 W (mfr) | 3,600 W; 7,200 W surge; X-Boost 4,500 W (mfr) |
| Solar max | 1,000 W dual port, 11–60 V (mfr) | 1,600 W, 11–150 V (mfr) |
| AC refill | 1,800 W X-Stream (mfr) | 1,800 W at 120 V; 3,000 W at 240 V (mfr) |
| Weight | 23 kg / 50 lb (mfr) | Approx. 45 kg / 99 lb (mfr) |
| Cycle life | 3,000 cycles to 80%+ (mfr) | 3,500 cycles to 80% (mfr) |
Models on this page (confirm listing)
Approx. USD: check current listing — QuietWatt does not quote street prices here.
| Model | Wh · notes | Why it lands here | Approx. USD |
|---|---|---|---|
| EcoFlow DELTA 2 Max 2,048 Wh expandable | 2,048 Wh · 2,400 W · 23 kg (mfr) | RV / weekend / whole-fridge. Down-ladder: DELTA 2 vs DELTA 2 Max. | Check current listing |
| EcoFlow DELTA Pro 3,600 Wh home battery | 3,600 Wh · 3,600 W · approx. 45 kg (mfr) | Home backup / transfer-switch plans. See DELTA Pro vs DELTA 2. | Check current listing |
When each one wins
DELTA 2 Max is enough
DELTA Pro is worth it
Rivals still win
Surge / LRA / start / continuous: motor loads can trip small inverters — see peak vs continuous · home vs portable · best camping · what size.
Where to buy (affiliate placeholders)
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