The EcoFlow Delta Pro wins on charging speed, app experience, and all-in-one convenience. The Bluetti AC300 wins on modularity — you can start without a battery and expand to 12.3kWh. If you want one unit that does everything, get the Delta Pro. If you want to spread the cost over time or scale to a larger system, get the AC300.
These are the two most capable portable power stations on the market, and choosing between them is genuinely a close call. We've owned both for over four months and tested them side by side under the same load conditions. Here's the honest breakdown.
Side-by-Side Specifications
| Spec | EcoFlow Delta Pro | Bluetti AC300 |
|---|---|---|
| Base Capacity | 3,600Wh (built-in) | 0Wh (requires B300 battery) |
| With 1 Battery Pack | 3,600Wh | 3,072Wh (1× B300) |
| Max Capacity | 10,800Wh (+ 2× extra batteries) | 12,288Wh (4× B300) |
| AC Output | 3,600W continuous | 3,000W continuous |
| Surge Power | 7,200W | 6,000W |
| Battery Chemistry | LiFePO4 | LiFePO4 |
| Cycle Life | 3,500+ | 3,500+ |
| AC Charge Time (0–80%) | ~50 minutes | ~1.5 hours |
| Max Solar Input | 1,600W | 2,400W (with 2× AC300 units) |
| AC Outlets | 4× AC | 6× AC |
| USB-C (PD) | 2× 100W | 2× 100W |
| Wireless Charging | ✗ | ✓ 15W |
| App | ✓ Wi-Fi + BT | ✓ Bluetooth only |
| Display | LCD touchscreen | LCD touchscreen |
| Weight (unit only) | 99 lbs | 30.9 lbs (no battery) |
| Warranty | 5 years | 4 years |
Key Differences Explained
Charging Speed — EcoFlow Wins Clearly
The Delta Pro's X-Stream fast charging hits 0–80% in about 50 minutes from a wall outlet. That's the fastest charging we've measured on any power station in this class. The Bluetti AC300 takes around 1.5 hours to 80%, which is still good — but noticeably slower when you need power fast after a storm depleted your battery.
In solar charging, the Bluetti has the theoretical edge if you're running a massive array (up to 2,400W with a paired second AC300), but in practice most users run 2–4 panels and the Delta Pro's 1,600W max input is more than enough to max out a realistic home solar setup.
Capacity & Modularity — Bluetti Has the Edge for Large Systems
Here's the interesting part: the Bluetti AC300 has no built-in battery. You buy the AC300 inverter unit and the B300 batteries separately. This sounds like a disadvantage, but it's actually smart engineering for serious users. You can start with one B300 (3,072Wh) and add up to three more for 12.3kWh total — more than the Delta Pro's 10.8kWh maximum. And if a battery ever fails, you replace just that battery, not the whole unit.
For most people, this modularity is overkill. The Delta Pro's integrated design is more practical, easier to set up, and requires no additional purchases to start using. But if you're building toward a serious home energy storage system, the AC300's architecture makes sense.
Output Power — EcoFlow Has More Headroom
The Delta Pro delivers 3,600W continuous AC output (7,200W surge). The Bluetti AC300 delivers 3,000W continuous (6,000W surge). In real use, this difference matters if you're running large loads — a 3,000W electric heater, for example, is right at the AC300's limit and well within the Delta Pro's comfort zone. For most household appliances, both are more than adequate.
App & Connectivity
The EcoFlow app connects via Wi-Fi (and Bluetooth as backup), which means you can monitor your unit from anywhere with an internet connection — useful if you want to check status while at work during a storm. Bluetti's app is Bluetooth-only, which limits range to about 30 feet. Both apps show real-time input/output and battery status. EcoFlow's is more polished overall.
The Wildcard: Wireless Charging
The AC300 has a 15W wireless charging pad on top — a small but genuinely convenient feature that the Delta Pro lacks. Not a dealbreaker either way, but worth noting.
Who Should Buy the EcoFlow Delta Pro?
Pros
- You want one integrated unit — no separate battery purchase
- Fast charging matters to you (50-min to 80%)
- You want Wi-Fi app monitoring
- You prefer the EcoFlow ecosystem (Delta Pro panels, cables, accessories)
- You want a slightly higher output ceiling (3,600W vs 3,000W)
Cons
- You want to start small and scale battery capacity over time
- You're building a large solar storage system (12kWh+)
- Budget is a primary concern (Bluetti AC300 alone is cheaper)
Who Should Buy the Bluetti AC300?
Pros
- You want to scale to 12kWh+ over time
- You prefer modular architecture (replace battery independently)
- You want 6 AC outlets vs 4
- Wireless charging is useful to you
- You're running a large multi-panel solar array (800W+)
Cons
- You need the fastest possible recharge time
- You want simple all-in-one setup
- Wi-Fi app monitoring matters to you
Our Verdict
For the majority of buyers — people who want excellent home backup power in one unit they can plug in and forget about — the EcoFlow Delta Pro is the better choice. It's faster, more polished, and genuinely self-contained. The Bluetti AC300 is the right call for technically-minded buyers who are thinking about building a larger system over time and value the modularity of separating the inverter from the batteries. Either way, you're buying one of the best power stations on the market. You won't regret either choice.