EF ECOFLOW DELTA 2 Smart Extra Battery, vs DARAN Portable Power Station 28,
Updated July 2026 — EF ECOFLOW DELTA 2 Smart Extra Battery, wins on output and capacity, DARAN Portable Power Station 28, wins on cycles and charge time.
The EF ECOFLOW DELTA 2 Smart Extra Battery offers superior capacity and power output, making it ideal for demanding energy needs, while the Portable Power Station 28 is a budget-friendly option for light usage.
Why EF ECOFLOW DELTA 2 Smart Extra Battery, is better
Higher Capacity
1024Wh vs 89.6Wh
More Power Output
1800W vs 100W
Faster Charging
0-80% in 80 mins vs 1.5 hrs
Why DARAN Portable Power Station 28, is better
Lower Price
$379.00 vs $89.99
Compact Size
Fits in a backpack
Lightweight
2.54 pounds vs heavier
Overall score
Specifications
| Spec | EF ECOFLOW DELTA 2 Smart Extra Battery, | DARAN Portable Power Station 28, |
|---|---|---|
| Battery Type | LiFePO4 | LiFePO4 |
| Price | $379.00 | $89.99 |
| Bestseller Rank | 11964 | 1216 |
| Charging Options | AC, Solar, Car | AC, USB-C, Solar |
| Portability | Less Portable | Highly Portable |
Dimension comparison
Overview of the Products
The EF ECOFLOW DELTA 2 Smart Extra Battery and the Portable Power Station 28 offer distinct features that cater to different user needs. The DELTA 2 Smart Extra Battery provides a significant capacity of 1024Wh, while the Portable Power Station 28 offers a smaller capacity of 28,000mAh, making it about 73% less powerful. Each product has its own strengths, appealing to varying contexts like home backup, outdoor activities, or emergency situations.
Capacity and Power Output
When it comes to capacity and power output, the EF ECOFLOW DELTA 2 Smart Extra Battery stands out with its 1024Wh capacity, enabling users to expand their DELTA 2 power station's total to 2048Wh. In contrast, the Portable Power Station 28 features a capacity of 28,000mAh, which converts roughly to 89.6Wh. This represents a staggering difference, as the DELTA 2 Smart Extra Battery offers approximately 11.4 times more energy storage. Furthermore, the DELTA 2 can power devices with up to 1800W output, compared to the Portable Power Station 28's 100W output, making it better suited for running larger appliances.
Portability and Design
In terms of portability, the Portable Power Station 28 is designed to be compact and lightweight, weighing only 2.54 pounds and measuring about the size of a smartphone. This makes it incredibly easy to transport for outdoor activities like camping or day trips. On the other hand, while the DELTA 2 Smart Extra Battery is designed to be an expansion battery rather than a standalone unit, portability is less of a focus here, as it is meant to integrate with the DELTA 2 power station. Users seeking convenience and lightness will likely prefer the Portable Power Station 28.
Charging Options
The charging capabilities of both products vary significantly. The EF ECOFLOW DELTA 2 Smart Extra Battery can charge using multiple methods, including AC outlets, car outlets, solar panels, and even a Smart Generator, achieving a 0-80% charge in just 80 minutes. Conversely, the Portable Power Station 28 also offers versatile charging options, including AC wall socket, USB-C, car charging, and solar panel charging, but it takes approximately 1.5 hours to reach 80%. Thus, while both units boast fast charging, the DELTA 2 Smart Extra Battery has a quicker charge time, providing more efficient energy management.
Longevity and Durability
Longevity is another critical factor where the EF ECOFLOW DELTA 2 Smart Extra Battery excels, boasting over 3000 charge cycles, ensuring that it lasts years with regular use. The Portable Power Station 28 claims to have a lifespan of over 3500 cycles, which is competitive. However, the DELTA 2 Smart Extra Battery’s longer lifespan might appeal more to users looking for a long-term investment. Both products use LiFePO4 battery technology, known for its safety and durability, making them both reliable options.
Price Comparison
The pricing of these products diverges significantly. The EF ECOFLOW DELTA 2 Smart Extra Battery is priced at $379.00, while the Portable Power Station 28 is considerably lower at $89.99. This means that the DELTA 2 Smart Extra Battery is approximately 320% more expensive than the Portable Power Station 28. While the DELTA 2 offers more features and greater capacity, the lower price of the Portable Power Station makes it accessible for users on a budget or those who need a compact solution for light usage.
Best Seller Rankings
In terms of popularity, the Portable Power Station 28 holds a bestseller rank of 1216, indicating a strong market presence and user satisfaction. The EF ECOFLOW DELTA 2 Smart Extra Battery, however, has a sales rank of 11964, suggesting that it may not be as widely favored among consumers. This disparity could reflect the differing target audiences, with the Portable Power Station appealing to casual users and outdoor enthusiasts, while the DELTA 2 targets those with more demanding energy needs.
Which should you buy?
Deciding between the EF ECOFLOW DELTA 2 Smart Extra Battery and the Portable Power Station 28 ultimately depends on your specific needs. If you require a high-capacity solution for extensive power needs, the DELTA 2 Smart Extra Battery is the superior choice, providing ample output and faster charging options. However, if portability, budget-friendliness, and ease of transport are your primary concerns, the Portable Power Station 28 is a strong contender that offers adequate power for lighter applications.

