Power stations
Bluetti AC180 vs EcoFlow Delta 2
This was a close comparison between two 1000Wh-class LiFePO4 units. The AC180 wins on capacity, while the Delta 2 won on recharge speed, ports, and the option to add more capacity later. The spec table preserves that original matchup. For a current EcoFlow purchase, the buying guidance below points to the Delta 3 Classic instead.
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| Spec | Bluetti AC180 | EcoFlow Delta 2 |
|---|---|---|
| Capacity | 1152Wh | 1024Wh |
| AC continuous output | 1800W | 1800W |
| AC surge / lifting mode | 2700W power-lifting | 2700W (X-Boost on devices) |
| Battery chemistry | LiFePO4 | LiFePO4 |
| Cycle rating | 3500 to 80% | 3000 to 80% |
| Wall recharge | ~1.5 hr full | ~50 min to 80%, ~80 min full |
| Max solar input | 500W | 500W, earlier low-light harvest |
| AC outlets | 4 | 6 |
| USB ports | 4x USB-A, 1x 100W USB-C | 4x USB-A, 2x 100W USB-C |
| Expandable | No, sealed unit | Yes, +1024Wh smart battery |
| App | Bluetooth | Wi-Fi + Bluetooth |
| Amazon availability | Check the current listing | No longer available |
| Buying role | Higher-capacity original pick | Historical comparison only |
Where each one wins
AC180 wins on capacity
The Bluetti AC180 gives you more energy in the box at 1152Wh. It runs the same 1800W continuous output as the original Delta 2, so the historical performance comparison still stands. For the person who wants a dependable backup battery for camping and occasional outages, and does not need fast recharging or expansion, it is the better fit from the original pair.
Delta 3 Classic is the current EcoFlow pick
The EcoFlow Delta 3 Classic is the like-for-like replacement for the Delta 2, with 1024Wh capacity and 1800W output. It reaches 80 percent in 45 minutes through X-Stream AC charging, provides 3600W surge through X-Boost, switches to battery in under 10 milliseconds, and uses LiFePO4 cells.
Which should you buy?
For higher capacity and occasional use, buy the Bluetti AC180. You get 1152Wh of capacity against the original Delta 2's 1024Wh, with the same strong 1800W output. If the unit will spend most of its life on standby and come out for trips and outages, the AC180 is the better fit from the original pair.
For the current EcoFlow alternative, buy the EcoFlow Delta 3 Classic. It keeps the Delta 2's 1024Wh capacity and 1800W output, reaches 80 percent in 45 minutes, and adds under-10-millisecond UPS switchover. The Delta 2 comparison is still useful history, but it is no longer current buying advice.
Keep going
- See what a 1000Wh unit actually runs: What Can a 1000Wh Power Station Run?
- Size your needs with the Run-Time Calculator.
- Read the full EcoFlow Delta 2 review.
- Compare the same Delta 2 against the Jackery: Delta 2 vs Jackery 1000 v2.
- Compare the two brands across their lineups: EcoFlow vs Bluetti.
- Find a unit for outages: best power stations for emergencies.
Frequently Asked Questions
Which holds more energy, the Bluetti AC180 or the EcoFlow Delta 2?
The Bluetti AC180, by a small margin. It carries about 1152Wh against the Delta 2's 1024Wh, so it has a little more runtime in the tank before it needs a recharge. In real use that gap is around 12 percent, which buys you maybe an extra hour or two on a fridge. It was a tiebreaker in the original matchup, not a current reason to shop for a Delta 2 that is unavailable on Amazon.
Which charges faster from the wall?
In the original comparison, the EcoFlow Delta 2 was faster. It reaches 80 percent in about 50 minutes and a full charge in roughly 80 minutes, while the Bluetti AC180 takes closer to 1.5 hours for a full top-up. The Delta 2 is no longer available on Amazon, so it is not the current answer for a fast-charging buy. The Delta 3 Classic is the replacement and reaches 80 percent in 45 minutes through X-Stream AC charging.
Which takes more solar input?
The EcoFlow Delta 2 accepts up to 500W of solar, the same ceiling listed here for the Bluetti AC180, but the Delta 2's MPPT tends to start harvesting sooner in low light. Both refill from panels in similar time under full sun, roughly 3 to 4 hours with enough watts on the array. The practical difference was small, so solar charging did not decide the original matchup. This is a historical comparison, not a reason to buy the Delta 2 now that it is unavailable on Amazon.
Can either one be expanded with more capacity?
The EcoFlow Delta 2 can. It accepts a 1024Wh smart extra battery that roughly doubles capacity to about 2048Wh, and the platform supports growth toward around 3kWh. The Bluetti AC180 is a sealed unit with no expansion port, so what you buy is what you have for its whole life. For a new purchase, the Delta 2 is no longer available on Amazon, and this page does not claim that its old expansion accessory fits the Delta 3 Classic replacement.
Are both safe to run a CPAP or fridge overnight?
Yes. Both are around the 1000Wh class with pure sine wave output, which is plenty to run a typical CPAP through the night with capacity to spare, and enough to keep an efficient 12V fridge cold for a day or more. Turn off any CPAP humidifier heat to stretch runtime, since that heater is the single biggest draw on the machine. For a fridge, both units will idle quietly between compressor cycles and last well past a single night.