Specifications checked against manufacturer pages on 2026-08-23.
The Bluetti AC200L (2,048 Wh, 2,400 W) and the EcoFlow DELTA 2 Max (2,048 Wh, 2,400 W), compared on the figures their makers publish. On the normalized ratios, the AC200L costs less per watt-hour ($0.44/Wh vs $0.63/Wh); the DELTA 2 Max carries more per pound (41.0 Wh/lb vs 32.8 Wh/lb).
In short. The AC200L leads on cost per watt-hour ($0.44/Wh vs $0.63/Wh) and continuous watts per dollar (2.67 W/$ vs 1.85 W/$). The DELTA 2 Max leads on watt-hours per pound (41.0 Wh/lb vs 32.8 Wh/lb). 3 of 6 measures tie or are not comparable.
Check the current price
Links go to the exact base unit we compared, not a bundle. Amazon prices change daily.
We do not link the DELTA 2 Max: 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. UPS switchover is how long the outlets go dark when grid power drops.
| Specification | Bluetti AC200L | EcoFlow DELTA 2 Max |
|---|---|---|
| Rated capacity | 2,048 Wh1 | 2,048 Wh2 |
| Usable capacity (calculated)* | 1741–1843 Wh | 1741–1843 Wh |
| Continuous AC output | 2,400 W3 | 2,400 W4 |
| Surge output | 4,800 W5 | 4,800 W6 |
| Full recharge from wall | Manufacturer does not state (0–80% in 45 min)7 | Manufacturer does not state (0–80% in 66 min)8 |
| Cell chemistry | LiFePO49 | LFP (LiFePO4)10 |
| Rated cycle life | 3,000+ cycles to 80%11 | 3,000 cycles to 80%+12,13 |
| UPS switchover | 20 ms14 | <20 ms15 |
| Expandable | Yes, up to 8,192 Wh16 | Yes, up to 6,144 Wh17,18 |
| Max solar input | 1,200 W19 ✓ | 1,000 W20 |
| Max AC charging input | 2,400 W21 ✓ | 1,800 W22 |
| AC outlets | 523 | 624 ✓ |
| Highest USB-C port | 100 W25 | 100 W26 |
| App control | Yes27 | Yes28 |
| Stated noise | ≤50 dB29 | 30 dB30 |
| Warranty | 5 years31 | 5 years32 |
| Weight | 62.4 lb33 | 50 lb34 ✓ |
| Manufacturer list price when checked | $89935 ✓ | $1,29936 |
* Calculated: rated capacity × an assumed 85–90% conversion efficiency; no maker publishes a usable figure.
Notes on the figures
- AC200L, rated capacity: 2,048Wh (51.2V, 40Ah)
- DELTA 2 Max, rated capacity: Listed under “Capacity” on the manufacturer’s spec sheet for the base unit.
- AC200L, continuous output: 2,400W In Total
- DELTA 2 Max, continuous output: Total continuous AC output across all six outlets.
- AC200L, surge: Read from the manufacturer’s AC200L solar-bundle listing; the standalone product page could not be rendered when checked.
- DELTA 2 Max, surge: Conventional surge rating; the page separately markets a boost mode of 3400 W for resistive loads.
- AC200L, recharge: Bluetti publishes a 0–80% time (45 minutes at 2,400 W input), not a full-charge time.
- DELTA 2 Max, recharge: The manufacturer does not state a full 0-100% wall-recharge time. It states an 80% charge in 1.1 hours on AC alone, and 80% in 43 minutes when 1800 W AC input is combined with 600 W of solar input.
- AC200L, cell chemistry: LiFePO₄ (Lithium Iron Phosphate)
- DELTA 2 Max, cell chemistry: Listed under “Battery Chemistry” on the manufacturer’s spec sheet.
- AC200L, cycle life: 3,000+ Cycles to 80% Original Capacity
- DELTA 2 Max, cycle life: Rated to the point where at least 80% of original capacity remains.
- DELTA 2 Max, cycle life: The manufacturer writes “80+%”, meaning 80 percent or more of the original capacity remains after the rated cycles.
- AC200L, UPS switchover: 20ms UPS
- DELTA 2 Max, UPS switchover: Upper bound. The page states the auto-switch to battery power happens in under 20 milliseconds.
- AC200L, expandable: 8,192Wh with 2×B300
- DELTA 2 Max, expandable: Capacity expands by attaching up to two extra batteries.
- DELTA 2 Max, expandable: Maximum system capacity with two extra batteries attached.
- AC200L, solar input: Solar Input: 1,200W Max., VOC 12-145VDC, 15A
- DELTA 2 Max, solar input: Total across the two solar input ports; a single port accepts up to 500 W.
- AC200L, AC input: AC Input: 2,400W Max.
- DELTA 2 Max, AC input: Maximum AC wall-charging input.
- AC200L, AC outlets: AC Outlets: 4 x 120V/20A Outlets 1 x 120V/30A NEMA TT-30 2,400W In Total
- DELTA 2 Max, AC outlets: Six household AC outlets sharing a 2400 W total output.
- AC200L, USB-C: USB-C Port: 2 x 100W Max.
- DELTA 2 Max, USB-C: Per port; the unit has two USB-C ports.
- AC200L, app: FAQ Q4 (‘Does AC200L support App control?’).
- DELTA 2 Max, app: Controlled through the EcoFlow app; the spec sheet lists Wi-Fi and Bluetooth connectivity.
- AC200L, noise: Stated as ≤50 dB in the manufacturer’s FAQ, without a measurement condition.
- DELTA 2 Max, noise: Measured at a distance of approximately 20 inches, with low charging input and a 500 W output load, per the page’s own footnote.
- AC200L, warranty: Warranty: 5 Years
- DELTA 2 Max, warranty: The maker markets this as an “Extensive 5-Year Warranty” on the product page.
- AC200L, weight: 62.4lbs
- DELTA 2 Max, weight: Net weight of the base unit; the same spec sheet lists the metric weight as 23 kg.
- AC200L, price: Manufacturer price for the AC200L base unit, read from the product-comparison widget on the maker’s AC200L solar-generator bundle page on 2026-09-11; the standalone AC200L page could not be read that day.
- DELTA 2 Max, price: List price; a sale price of $1,049.00 was shown.
The same specs, normalized
Ratios, so the bigger unit does not win by default.
| Measure | AC200L | DELTA 2 Max |
|---|---|---|
| Cost per watt-hour | $0.44/Wh ✓ | $0.63/Wh |
| Watt-hours per pound | 32.8 Wh/lb | 41.0 Wh/lb ✓ |
| Surge headroom | 2.00× | 2.00× |
| Recharge rate | Not comparable — Bluetti does not state a full-recharge time for the AC200L. | |
| Rated cycle life | 3,000 | 3,000 |
| Continuous watts per dollar | 2.67 W/$ ✓ | 1.85 W/$ |
Definitions and direction of each ratio: How we verify.
What each one runs, for how long
| Appliance | AC200L | DELTA 2 Max |
|---|---|---|
| Full-size refrigerator 150 W, 900 W start, 35% duty · eff. 80%–87% |
31–34 hr | 31–34 hr |
| Mini fridge 70 W, 400 W start, 30% duty · eff. 70%–82% |
2.8–3.3 days | 2.8–3.3 days |
| CPAP without humidifier 40 W · eff. 70%–82% |
36–42 hr | 36–42 hr |
| CPAP with heated humidifier 95 W · eff. 70%–82% |
15–18 hr | 15–18 hr |
| Gas furnace blower 400 W, 1600 W start, 40% duty · eff. 80%–87% |
10–11 hr | 10–11 hr |
| 1/3 hp sump pump 500 W, 1800 W start, 15% duty · eff. 85%–90% |
23–25 hr | 23–25 hr |
| Router and modem 20 W · eff. 70%–82% |
3.0–3.5 days | 3.0–3.5 days |
| Laptop 60 W · eff. 70%–82% |
24–28 hr | 24–28 hr |
| 1500W space heater 1500 W · eff. 85%–90% |
about 1.2 hr | about 1.2 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 AC200L costs $0.44/Wh against $0.63/Wh for the DELTA 2 Max. At list the AC200L is $400 cheaper ($899 vs $1,299) for 2,048 Wh vs 2,048 Wh. Prices move with sales; the ratio moves with them.
Weight for the capacity. The DELTA 2 Max carries 41.0 Wh/lb against 32.8 Wh/lb for the AC200L. Both are cart-or-two-people units; the difference matters if the unit moves between car, porch and basement.
Output for the money. 2.67 W/$ on the AC200L against 1.85 W/$ on the DELTA 2 Max: this is the ratio to read if your outage plan is one big appliance, not many small ones.
Which one, and for whom
On normalized measures the AC200L leads on cost per watt-hour ($0.44/Wh vs $0.63/Wh) and continuous watts per dollar (2.67 W/$ vs 1.85 W/$). The DELTA 2 Max answers on watt-hours per pound (41.0 Wh/lb vs 32.8 Wh/lb). The deciding figure is the one your own outage will test first:
- CPAP overnight. Switchover: AC200L 20 ms, DELTA 2 Max under 20 ms. A 40 W CPAP runs roughly 36–42 hr on the AC200L and 36–42 hr on the DELTA 2 Max. Both makers state 20 ms, so for one night’s CPAP the deciding figures are price and solar input.
- Keeping a refrigerator cold. The compressor has to start before hours matter. Both state a 4,800 W surge and both calculate to 31–34 hr on a full-size refrigerator, so this scenario does not separate them.
- A multi-day outage with a generator or solar to recharge from. Full recharge: AC200L 0–80% in 45 min (no full-charge time stated), DELTA 2 Max 0–80% in 66 min (no full-charge time stated). These are not comparable: Bluetti states no full-charge time for the AC200L.
Check the current price
Links go to the exact base unit we compared, not a bundle. Amazon prices change daily.
We do not link the DELTA 2 Max: we could not confirm a listing for the exact base unit, and we do not link a guess.
Related reading
A 2,048 Wh battery cannot do what a gasoline generator does — the runtime table shows a 1,500 W space heater emptying either unit in about 1.2 hr — but it also cannot poison a household. How often gasoline generators kill indoors — and how the official count keeps being revised — is documented in our CPSC revision matrix, and this page puts every verified unit on the same refrigerator scenario.
Other comparisons with these models
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
- Bluetti AC200L: manufacturer product page, checked 2026-08-23.
- EcoFlow DELTA 2 Max: manufacturer product page, checked 2026-08-24.
Published specifications only; no bench tests. Method: How we verify. More: Comparisons.