Extra battery initially missing, error code, then resolved
The Delta Pro 3 arrived without the extra battery, and the main unit displayed an overvoltage protection error (312) referencing USB-A Port 1 even though nothing was connected there. Customer service responded promptly, sending the missing battery the next day and a replacement for the main unit. After charging, the unit appears to be working, and it is intended for use on the road.
Pros
- + helpful customer service
- + replacement unit provided
- + unit works after charging
Cons
- − extra battery not shipped initially
- − overvoltage protection error code
AI-assisted summary of a verified Amazon customer review.
· July 25, 2024 · United States
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Useful Portable Power Station for Backup and Travel
This power station works well as an electrical backup. It is easy to transport, and the display clearly shows battery status and charge level. Recharging is fast. It has been used with various electronic devices and has operated stably. Build quality feels reliable and the unit appears designed to last. A good option for emergencies, travel, or places where portable power is needed.
Pros
- + easy to transport
- + clear battery and charge display
- + fast recharging
- + stable operation with various devices
- + reliable build quality
AI-assisted summary of a verified Amazon customer review.
· July 28, 2026 · United States
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Great Alternative to Natural Gas Generators
This portable power station is described as a great alternative to natural gas generators, requiring no maintenance and no installation cost. It can be wheeled around the house to wherever power is needed, making it convenient for use in different locations.
Pros
- + no maintenance
- + no installation cost
- + portable and easy to move around the house
AI-assisted summary of a verified Amazon customer review.
· February 22, 2026 · United States
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Main unit and battery ship separately; strong build
The main unit and extra battery arrive in separate shipments, which can cause concern until the battery is delivered. Customer service responds promptly to clarify the shipping process. The unit is described as solidly built and well packed. It is intended as a dedicated backup for a 200-gallon reef tank and for storing self-produced solar energy instead of selling it back to the utility at a lower rate. Further impressions will follow after more use.
Pros
- + prompt customer service
- + solid build quality
- + well packed
Cons
- − main unit and extra battery ship separately
AI-assisted summary of a verified Amazon customer review.
· February 24, 2026 · United States
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ECOFLOW Delta Pro 3 Backup System Overview
The ECOFLOW Delta Pro 3 with extra batteries is a costly backup system, but sales and price adjustments can reduce the expense. Customer service honored a price adjustment after a subsequent sale. The system has not yet been used, but prior experience with a smaller ECOFLOW unit provides familiarity. It is intended for quiet nighttime backup, recharged during the day by a gas generator. Solar panels are available but were not purchased due to limited needs and cost. Knowing kWh requirements helps determine backup size. A minor drawback is that extra batteries cannot be charged independently.
Pros
- + quiet operation
- + customer service honored price adjustment
- + can be recharged by gas generator during the day
Cons
- − extra batteries cannot be charged independently
- − high cost
AI-assisted summary of a verified Amazon customer review.
· July 20, 2025 · United States
Read original on Amazon ↗
