BLUETTI’s Apex 300 and EcoFlow’s DELTA Pro are both wheeled, LiFePO4 home-backup power stations, but they’re built for different jobs. The DELTA Pro carries more battery in one box, 3,600Wh against the Apex 300’s 2,764.8Wh, according to each maker’s specifications. The newer Apex 300 answers with a higher 3,840W inverter, native 120V/240V output and up to 2,400W of solar input, against the DELTA Pro’s 3,600W, 120V-only output and 1,600W solar limit. On October 17, 2026, EcoFlow’s U.S. store listed the DELTA Pro at $1,799. Here’s how they compare and which fits your home or RV.
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Apex 300 figures come from BLUETTI’s Apex 300 user manual (V1.1). DELTA Pro figures come from EcoFlow’s DELTA Pro product page and its FAQ. Runtimes and charge times marked as estimates are my own math. Both are on Amazon: the BLUETTI Apex 300 and the EcoFlow DELTA Pro.
The quick verdict
- Choose the Apex 300 if you want 240V from a single unit (for a well pump, dryer circuit or a 240V home panel), faster solar charging, or a path to very large battery banks.
- Choose the DELTA Pro if you want the most capacity in one portable box, a wide 11–150V solar range, and a broad set of 12V and USB ports for RV and camping use.
Side-by-side specs
| Spec | BLUETTI Apex 300 | EcoFlow DELTA Pro |
|---|---|---|
| Capacity | 2,764.8Wh LiFePO4 (51.2V, 54Ah) | 3,600Wh LFP |
| Rated AC output | 3,840W | 3,600W (7,200W surge) |
| Voltage | 120V and 240V | 120V (240V needs two units and a Double Voltage Hub) |
| Boost mode | Not listed | X-Boost for devices up to 4,500W |
| AC outlets | 4 x 5-20R, 1 x TT-30R, 1 x L14-50R | 5 outlets |
| USB and 12V | Via optional Hub D1 (USB-C up to 100W, USB-A, 12V/24V outputs) | 2 x USB-C 100W, 4 x USB-A, car outlet 126W, 2 x DC5521, Anderson 12.6V/30A |
| AC charging | 1,800W (15A inlet); up to 3,840W via its 50A port | 1,800W at 120V; 3,000W at 240V |
| Solar input | 2 x 1,200W (12–60V, 20A each) | 1,600W (11–150V, 15A) |
| Expansion | Up to 6 B300K, 19,353.6Wh | Up to 2 Extra Batteries or Smart Generators |
| Weight | About 83.78 lb | About 99 lb |
| Size | 20.67 x 12.87 x 12.6 in | 25 x 11.2 x 16.4 in |
| Idle draw | About 20W (manual FAQ) | About 30W with AC on (EcoFlow FAQ) |
Question 1: How much runtime do you get?
The DELTA Pro’s extra 835Wh is a real advantage for single-unit backup. Using about 85% of rated capacity as usable AC energy:
| Average load | Apex 300 (~2,350Wh usable, est.) | DELTA Pro (~3,060Wh usable, est.) |
|---|---|---|
| 100W (router, lights, phone charging) | About 23 hours | About 30 hours |
| 200W (fridge plus essentials) | About 12 hours | About 15 hours |
| 500W (fridge, freezer, TV, fans) | About 4.7 hours | About 6 hours |
| 1,000W (microwave and kettle in bursts, window AC) | About 2.3 hours | About 3 hours |
Estimates only. Idle draw matters on long, light loads: EcoFlow lists about 30W of standby draw with the DELTA Pro’s AC output on, and BLUETTI’s FAQ lists about 20W for the Apex 300. Turn off AC output when you don’t need it.
Question 2: Do you need 240V?
This is the clearest difference. The Apex 300 has an L14-50R outlet and a P050A port that deliver 120V/240V from one unit, which suits 240V well pumps and home transfer setups. BLUETTI’s manual also lists a seamless 0ms UPS switchover when set to 240V and connected to specific outlets, or 20ms or less on others.
The DELTA Pro is a 120V unit. EcoFlow’s route to 240V is to link two DELTA Pros through its Double Voltage Hub, which roughly doubles the cost. If 240V is a must, the Apex 300 gets there with a single box.
Question 3: How fast does it recharge?
| Source | Apex 300 | DELTA Pro |
|---|---|---|
| Standard wall outlet | 1,800W max | 1,800W; 2.7 hours full (EcoFlow) |
| Higher-power AC | Up to 3,840W via P050A; 80% in about 45 min (Turbo, 59–77°F) | 3,000W at 240V |
| Solar maximum | 2,400W total | 1,600W; 3.5 hours full (EcoFlow) |
| Solar, panels at ~75% of rating (est.) | About 1.5 hours with 2,400W of panels | About 3 hours with 1,600W of panels |
| EV charging station | Supported with optional cable | Supported; 1.7 hours at 3,400W (EcoFlow) |
Two notes. First, BLUETTI’s Turbo mode is what unlocks the fastest rates; its default Standard mode is gentler on the battery. Second, EcoFlow quotes 3,000W for combined AC and solar charging in its marketing, while its FAQ lists a 2,200W maximum for simultaneous AC and DC charging, so I’d plan around the lower figure.
On solar voltage, the DELTA Pro’s 11–150V window lets you wire more panels in series on one input. The Apex 300 splits its 2,400W across two 12–60V inputs, so you’ll wire smaller series strings into each.
Question 4: How big will your system grow?
The Apex 300 is designed for large banks. BLUETTI’s manual lists up to six B300K batteries per unit for 19,353.6Wh, and two or three Apex 300s can run in parallel through BLUETTI’s Hub A1, reaching 11,520W and 58,060.8Wh with three units and 18 batteries.
The DELTA Pro supports up to two Extra Batteries or Smart Generators per unit. EcoFlow says its headline 25kWh figure takes two DELTA Pros with a Smart Home Panel, two Extra Batteries on each, and two Smart Generators. For most homes, one DELTA Pro plus one or two Extra Batteries is the practical ceiling.
Question 5: Home, RV or both?
For RV and camping use, the DELTA Pro has the edge: an Anderson port rated at 12.6V/30A, a car outlet, two DC5521 jacks, two 100W USB-C ports and four USB-A ports, plus car charging input for 12V or 24V batteries. The Apex 300 has a TT-30R outlet for an RV, but its USB and 12V outputs come through BLUETTI’s optional Hub D1 DC power hub, which its manual says is required for DC output.
For home backup, the Apex 300’s 240V output, 0ms UPS option and expansion range make it the more flexible base. It’s also about 15 pounds lighter, though neither is light. For other options, see our Apex 300 review, AC300 vs Apex 300 comparison and DELTA 3 Ultra Plus vs DELTA Pro guide. If you need even more, our DELTA Pro Ultra review covers EcoFlow’s whole-home step up.
Three real-world setups
A suburban home with a 240V well pump
Here the Apex 300 is the natural fit. It can feed a 240V circuit from one unit, and adding B300K batteries over time stretches backup from hours to days. Pair it with a few kilowatts of solar on the two inputs and it can recharge during the day. Have a licensed electrician handle any connection to your home’s wiring.
A weekend RV with a 30A hookup
The DELTA Pro suits this better. Its 3,600Wh battery runs a typical RV’s lights, fridge and fans for longer between charges, and its built-in Anderson port, car outlet and USB-C ports handle 12V gear and laptops without extra hardware. EcoFlow also lists car charging input for 12V or 24V batteries, so you can top it up while driving.
A renter who wants outage backup without wiring
Either works. The DELTA Pro’s larger battery covers a fridge, router and lights through an overnight outage with room to spare, by my estimate. The Apex 300’s 0ms UPS option is the better choice if you’re protecting a desktop PC or network gear that can’t tolerate a blip.
Ports in plain terms
| What you want to plug in | Apex 300 | DELTA Pro |
|---|---|---|
| Household 120V appliances | Yes, 4 x 20A outlets | Yes |
| RV via 30A cord | Yes | Yes, via its 30A outlet |
| 240V tool or well pump | Yes, from a single unit | Only with two units and a hub |
| Laptop via USB-C | With the add-on hub, or an AC charger | Yes, 100W ports |
| 12V fridge | With the add-on hub | Yes, car outlet or Anderson |
FAQ
Which has more capacity, the Apex 300 or DELTA Pro?
The DELTA Pro: 3,600Wh against 2,764.8Wh. The Apex 300 expands further, to 19,353.6Wh with six B300K batteries.
Can either power a 240V appliance?
The Apex 300 can on its own, through its 240V generator-style outlet. The DELTA Pro needs a second unit and EcoFlow’s Double Voltage Hub.
Which charges faster from solar?
The Apex 300, at up to 2,400W across two inputs, against the DELTA Pro’s 1,600W.
Which is better for an RV?
The DELTA Pro, thanks to its built-in 12V Anderson port, car outlet and USB ports, plus a 30A outlet. The Apex 300 works too, through its RV outlet, and adds 12V and USB with BLUETTI’s add-on hub.
How heavy are they?
About 84 lb for the Apex 300 and about 99 lb for the DELTA Pro, per the makers. Both have wheels and handles.
Bottom line
The DELTA Pro gives you more capacity and more everyday ports in a single box, which makes it a strong all-rounder for RV trips and shorter outages. The Apex 300 is the better foundation for a home system, with 240V output, faster solar charging, a 0ms UPS option and room to grow to nearly 20kWh per unit. Decide first whether you need 240V; that usually settles it.