Full review
Longer notes from the same comments we summarized above.
What people reported
Owners frequently highlight the great pricing and deals for the EcoFlow Delta 2, with many purchasing units during sales events for prices ranging from $349 to $411. The unit's portability and versatility make it suitable for various applications, including use in minivans, for home server power, and even with 3D printers. Owners confirm its UPS functionality, noting that the accompanying app allows settings such as 'AC output to never timeout' for continuous power. At lower charging wattages, such as 200W or 400W, the fan operation is described as quiet, with charging times of 2-4 hours. The unit also supports dual inputs for solar charging.
Problems people mention
A notable issue raised by one owner involves EcoFlow's customer service and warranty policy, detailing a battery failure within two years, a denied return for an extra battery, and a refusal to honor the warranty for the Delta 2 replacement. Some users also reported inconsistent charging from a car's DC port compared to competitor products, observing that the unit charges at only 100 watts from a standard 12V socket. Inquiries about fan noise levels under heavy load and the efficiency of power pass-through during charging and discharging cycles are also common. There are also questions regarding safe storage temperatures for the unit, particularly in cold conditions, and concerns about the long-term effects of daily full charge/discharge cycles on battery health.
Where owners disagree
While many appreciate the value of the Delta 2, particularly when on sale, some owners debate whether building a comparable DIY power station from individual components for similar wattage (e.g., 800W) might be a better alternative. There is also discussion comparing the Delta 2 to the Delta 2 Max, with some suggesting that purchasing two Delta 2 units might offer better value than a single Delta 2 Max, especially when factoring in sale prices.
Who it's for
The EcoFlow Delta 2 is well-suited for individuals seeking a portable power station for backup power at home or on the go in a vehicle, especially those who can purchase it during promotional sales. It is also a good fit for users who can benefit from its UPS capabilities and app-based automation for specific loads like home servers or 3D printers. Potential buyers should consider the reported customer service issues and the limitations observed with car DC charging.
