EcoFlow Delta Pro 3 vs Bluetti AC500: Which Portable Power Station is Better?

Aug 12, 2025

When it comes to Portable Power Stations, the EcoFlow Delta Pro 3 wins for speed and portability, while the Bluetti AC500 rules for raw capacity. But that’s just the teaser—keep reading to see which one will actually keep your fridge humming and your gadgets happy off-grid.

Core Features and Specifications

Rated vs. Peak Power Output

The EcoFlow Delta Pro 3 delivers a rated AC output of 3,600W, with the ability to handle surges up to 4,000W. This is enough for high-demand appliances and multiple devices at once.

The Bluetti AC500 offers a higher rated AC output of 5,000W when paired with B300S batteries. This makes it ideal for heavy-duty loads or whole-home applications.

Battery Capacity and Technology (LiFePO4)

The EcoFlow Delta Pro 3 has a 3,600Wh capacity, expandable with additional units. It uses LiFePO4 battery technology for safety, efficiency, and longevity.

The Bluetti AC500 works with modular B300S batteries, each offering 5,120Wh. These also use LiFePO4 chemistry, known for long cycle life and stable performance.

EcoFlow DELTA Pro 3 portable power station with an extra battery module on a white background.

Expandability and Battery Modules

EcoFlow’s system allows extra battery packs to be connected, scaling up storage as needed. This makes it adaptable for longer trips or extended outages.

Bluetti’s modular approach means multiple B300S batteries can be added for massive capacity. It’s a setup aimed at long-term off-grid use or high-demand backup scenarios.

Physical Design and Portability (Weight and Dimensions)

The EcoFlow Delta Pro 3 is more compact at 45kg, measuring 401 × 193 × 330mm. Its smaller footprint makes it easier to store or transport.

The Bluetti AC500, without batteries, weighs 48kg and measures 470 × 230 × 362mm. Both are built to be rugged, but EcoFlow has the edge in portability.

Performance in Practice

Charging Speeds and Methods (AC, Solar, EV)

The Delta Pro 3 charges from 0–80% in about 1.1 hours via wall outlet. It supports up to 1,600W solar input, giving a solar recharge time of roughly 1.8 hours under ideal conditions.

The Bluetti AC500 takes about 1.8 hours for a 0–80% wall charge and supports 1,200W solar input. Both models can also be charged from a vehicle or generator.

EcoFlow DELTA Pro 3 portable power station with solar panels on a white background.

Output Ports and Compatibility

Each model includes AC outlets, USB-A, USB-C, and DC outputs. This variety ensures compatibility with a wide range of devices, from laptops to kitchen appliances.

EcoFlow’s layout is slightly more intuitive, but Bluetti matches it in versatility while offering higher maximum AC output.

Noise Levels and Cooling Systems

Both use active cooling fans to regulate temperature. Fan noise is noticeable under heavy load but stays within acceptable limits for most situations.

EcoFlow is generally quieter at lower to medium loads, making it a little more comfortable for indoor use.

App Control and User Interface

The EcoFlow app is praised for real-time monitoring, quick settings adjustments, and simple setup. It provides data on input/output power, battery status, and system alerts.

Bluetti’s app offers similar features—remote control, energy tracking, and notifications. Some users find EcoFlow’s interface slightly more user-friendly.

Real-World Use Cases and User Feedback

Home Backup and Whole-House UPS

Both models are capable of acting as home backup systems. The Delta Pro 3’s rapid recharge is useful for sudden outages.

Bluetti’s higher output and expandable batteries give it the edge for running more appliances for longer periods.

Off-Grid Living and RV Use

EcoFlow’s smaller size and fast solar recharge make it a strong choice for RVs and camping. It’s easy to move and quick to top up.

Bluetti’s greater capacity is better suited to those spending extended time off-grid, where size matters less than energy storage.

Customer Service and Reliability

Both brands offer a 10-year warranty and solid customer support. Bluetti’s LiFePO4 batteries can achieve up to 3,000 cycles to 80% capacity in ideal conditions, giving it a potential edge in lifespan.

Bluetti AC500 portable power station with multiple AC and DC outlets on a white background.

Pricing and Overall Value

The EcoFlow Delta Pro 3 starts at around $2,000, making it cheaper upfront.

The Bluetti AC500 starts at about $2,400 without batteries. While pricier, its modular design offers more potential capacity over time.

Making the Final Decision: Which Power Station is Best for You?

Pros, Cons, and Final Recommendations

EcoFlow Delta Pro 3 – Best for users who value portability, faster charging, and a streamlined interface. Ideal for RV trips, camping, and quick home backup.

Bluetti AC500 – Best for heavy-duty home backup or off-grid living where higher capacity and output are essential.

Short answer: Pick the Delta Pro 3 for speed and convenience, or the AC500 for raw power and expandability.

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