Bluetti AC200Max vs EcoFlow DELTA Pro: manufacturer-published specifications compared

Bluetti AC200Max vs EcoFlow DELTA Pro: more surge headroom vs cheaper per watt-hour

by

Specifications checked against manufacturer pages on 2026-08-23.

The Bluetti AC200Max (2,048 Wh, 2,200 W) and the EcoFlow DELTA Pro (3,600 Wh, 3,600 W), compared on the figures their makers publish. On the normalized ratios, the AC200Max has more surge headroom (2.18× vs 2.00×); the DELTA Pro costs less per watt-hour ($0.78/Wh vs $0.83/Wh).

In short. The DELTA Pro leads on cost per watt-hour ($0.78/Wh vs $0.83/Wh) and watt-hours per pound (36.4 Wh/lb vs 33.1 Wh/lb). The AC200Max leads on surge headroom (2.18× vs 2.00×). 3 of 6 measures tie or are not comparable.

Disclosure: This page contains affiliate links. If you click through and make a purchase, CalmWatt may earn a commission at no extra cost to you. As an Amazon Associate, CalmWatt earns from qualifying purchases. Prices and availability on Amazon change; we do not show them here.

Check the current price

EcoFlow DELTA ProEcoFlow DELTA Pro on Amazon

Links go to the exact base unit we compared, not a bundle. Amazon prices change daily.

We do not link the AC200Max: we could not confirm a listing for the exact base unit, and we do not link a guess.

Specifications, side by side

Numbered notes below the table give the source location or a caveat for figures that need one; check marks mark the better figure where one can be judged; “Manufacturer does not state” means absent from that maker’s page as of its check date listed under Sources.

Specification Bluetti AC200Max EcoFlow DELTA Pro
Rated capacity 2,048 Wh1 3,600 Wh2 ✓
Usable capacity (calculated)* 1741–1843 Wh 3060–3240 Wh
Continuous AC output 2,200 W3 3,600 W4 ✓
Surge output 4,800 W5 7,200 W6 ✓
Full recharge from wall Manufacturer does not state 162 min7
Cell chemistry LiFePO48 LFP9
Rated cycle life 3,500+ cycles to 80%10 3,500 cycles to 80%11,12
UPS switchover Manufacturer does not state Manufacturer does not state
Expandable Yes, up to 8,192 Wh13 Yes, up to 25,000 Wh14,15
Max solar input 900 W16 1,600 W17 ✓
Max AC charging input 500 W18 3,000 W19 ✓
AC outlets 520 521
Highest USB-C port 100 W22 100 W23
App control Yes24 Manufacturer does not state
Stated noise Manufacturer does not state 48–60 dB25
Warranty 4 years26 3 years27
Weight 61.9 lb28 ✓ about 99 lb29
Manufacturer list price when checked $1,69930 ✓ $2,79931

* Calculated: rated capacity × an assumed 85–90% conversion efficiency; no maker publishes a usable figure.

Notes on the figures

  1. AC200Max, rated capacity: 2,048Wh Capacity
  2. DELTA Pro, rated capacity: Rated capacity of the base unit before any extra batteries are added.
  3. AC200Max, continuous output: 2,200W AC Pure Sine Wave Inverter (4,800W Surge)
  4. DELTA Pro, continuous output: Rated continuous AC output across all outlets combined; an X-Boost mode supports resistive devices up to 4,500 W.
  5. AC200Max, surge: 2,200W AC Pure Sine Wave Inverter (4,800W Surge)
  6. DELTA Pro, surge: Conventional surge rating; the page separately markets a boost mode of 4500 W for resistive loads.
  7. DELTA Pro, full recharge: Full recharge from a standard wall outlet at 1,800 W takes 2.7 hours (162 minutes), the figure we use; the maker also states 1.7 hours at an EV charging station (3,400 W) and 1.9 hours with dual AC plus solar charging.
  8. AC200Max, cell chemistry: LiFePO4 Battery with 3,500+ Life Cycles to 80%
  9. DELTA Pro, cell chemistry: LFP is lithium iron phosphate chemistry.
  10. AC200Max, cycle life: LiFePO4 Battery with 3,500+ Life Cycles to 80%
  11. DELTA Pro, cycle life: To 80% of original capacity; the same specification line also states 6,500 cycles to 50% capacity.
  12. DELTA Pro, cycle life: Remaining-capacity endpoint paired with the 3,500-cycle figure; the maker also states 6,500 cycles to a 50% endpoint.
  13. AC200Max, expandable: Expandable Up To 6,144Wh with 2×B230, or 8,192Wh with 2×B300
  14. DELTA Pro, expandable: Each unit supports up to two DELTA Pro Smart Extra Batteries or Smart Generators.
  15. DELTA Pro, expandable: Upper bound for a whole-system setup that requires two DELTA Pro units with extra battery packs plus two Smart Generators; a single DELTA Pro with two extra batteries reaches 10.8 kWh.
  16. AC200Max, solar input: Solar Input: 900W Max., VOC 10-145VDC, 15A
  17. DELTA Pro, solar input: Maximum solar charging input; the solar input voltage range is 11-150 V at up to 15 A.
  18. AC200Max, AC input: AC Adapter Input: 500W.
  19. DELTA Pro, AC input: Maximum AC input at 240 V; on a standard 120 V outlet the maximum is 1,800 W.
  20. AC200Max, AC outlets: AC Outlets: 4 x 120V/20A Outlets 1 x 120V/30A NEMA TT-30 2200W In Total
  21. DELTA Pro, AC outlets: The specifications table lists five AC outlets; the page’s FAQ separately counts four 20 A household AC outlets among the unit’s output ports.
  22. AC200Max, USB-C: USB-C Port: 1 x 100W Max.
  23. DELTA Pro, USB-C: Per port; the unit has two USB-C ports.
  24. AC200Max, app: From FAQ ‘Q3: Does AC200MAX support App control?’.
  25. DELTA Pro, noise: Measured at a 1-meter distance; the level varies with the wattage flowing in or out of the battery and with temperature.
  26. AC200Max, warranty: Warranty: 48 Months (Learn more about BLUETTI warranty policy)
  27. DELTA Pro, warranty: EcoFlow states a 3-year standard warranty; a 2-year extension requires EcoFlow App registration, so per our policy we count the base three years.
  28. AC200Max, weight: 61.9 lbs
  29. DELTA Pro, weight: Approximate net weight stated by the manufacturer.
  30. AC200Max, price: Manufacturer list price when checked; on sale at $1,199 that day.
  31. DELTA Pro, price: List price; a sale price of $1,899 was shown, and a members-only final price of $1,799 was also advertised.

The same specs, normalized

Ratios, so the bigger unit does not win by default.

Measure AC200Max DELTA Pro
Cost per watt-hour $0.83/Wh $0.78/Wh ✓
Watt-hours per pound 33.1 Wh/lb 36.4 Wh/lb ✓
Surge headroom 2.18× ✓ 2.00×
Recharge rate Not comparable — Bluetti does not state a full-recharge time for the AC200Max.
Rated cycle life 3,500 3,500
Continuous watts per dollar 1.29 W/$ 1.29 W/$

Definitions and direction of each ratio: How we verify.

What each one runs, for how long

Appliance AC200Max DELTA Pro
Full-size refrigerator
150 W, 900 W start, 35% duty · eff. 70%–87%		 27–34 hr 2.0–2.5 days
Mini fridge
70 W, 400 W start, 30% duty · eff. 70%–82%		 2.8–3.3 days 5.0–5.9 days
CPAP without humidifier
40 W · eff. 70%–82%		 36–42 hr 2.6–3.1 days
CPAP with heated humidifier
95 W · eff. 70%–82%		 15–18 hr 27–31 hr
Gas furnace blower
400 W, 1600 W start, 40% duty · eff. 80%–87%		 10–11 hr 18–20 hr
1/3 hp sump pump
500 W, 1800 W start, 15% duty · eff. 85%–90% / 80%–87%		 23–25 hr 38–42 hr
Router and modem
20 W · eff. 70%–82%		 3.0–3.5 days 5.2–6.1 days
Laptop
60 W · eff. 70%–82%		 24–28 hr 1.8–2.1 days
1500W space heater
1500 W · eff. 85%–90%		 about 1.2 hr 2.0–2.2 hr

Calculated, not measured: hours = rated Wh × efficiency ÷ (appliance W × duty); assumptions on How we verify. “Unlikely to start”: start-up surge exceeds the stated surge rating.

What the differences mean

Price per watt-hour. At the list prices we checked, the DELTA Pro costs $0.78/Wh against $0.83/Wh for the AC200Max. At list the AC200Max is $1,100 cheaper ($1,699 vs $2,799) for 2,048 Wh vs 3,600 Wh. Prices move with sales; the ratio moves with them.

Weight for the capacity. The DELTA Pro carries 36.4 Wh/lb against 33.1 Wh/lb for the AC200Max. Both are cart-or-two-people units; the difference matters if the unit moves between car, porch and basement.

Surge headroom. The AC200Max’s stated 4,800 W surge is 2.18× its 2,200 W continuous rating, against 2.00× for the DELTA Pro (7,200 W over 3,600 W). Headroom is what starts a compressor or a pump; see the refrigerator and sump rows in the runtime table.

Which one, and for whom

On normalized measures the DELTA Pro leads on cost per watt-hour ($0.78/Wh vs $0.83/Wh) and watt-hours per pound (36.4 Wh/lb vs 33.1 Wh/lb). The AC200Max answers on surge headroom (2.18× vs 2.00×). What decides it is the figure your outage actually tests:

  • CPAP overnight. Switchover: AC200Max no UPS figure stated, DELTA Pro no UPS figure stated. A 40 W CPAP runs roughly 36–42 hr on the AC200Max and 2.6–3.1 days on the DELTA Pro. Both run the night; neither maker states a switchover time, so published numbers cannot separate them for CPAP use.
  • Keeping a refrigerator cold. Start-up comes first. The AC200Max states a 4,800 W surge rating; the DELTA Pro states a 7,200 W surge rating. A full-size refrigerator needs about 900 W to start.
  • A multi-day outage with a generator or solar to recharge from. Full recharge: AC200Max no recharge time stated, DELTA Pro 162 min. These are not comparable: Bluetti states no full-charge time for the AC200Max.

Check the current price

EcoFlow DELTA ProEcoFlow DELTA Pro on Amazon

Links go to the exact base unit we compared, not a bundle. Amazon prices change daily.

We do not link the AC200Max: we could not confirm a listing for the exact base unit, and we do not link a guess.

Related reading

A 2,048–3,600 Wh battery cannot do what a gasoline generator does — the runtime table shows a 1,500 W space heater emptying either unit in 1.2–2.2 hr — but it also cannot poison a household. Our CPSC revision matrix tracks how the official count of generator carbon-monoxide deaths has changed across report editions, and this page puts every verified unit on the same refrigerator scenario.

Ordering before a storm? Check the arrival date at checkout — a unit that ships tomorrow can beat a better one that ships next week. Amazon Prime includes fast delivery on eligible items and starts with a free trial; we earn a commission if you join.

Sources and method

Published specifications only; no bench tests. Method: How we verify. More: Comparisons.