10 Best Ups Backups 2026 in the United States

The EF ECOFLOW DELTA Pro with 2 Extra Batteries is a powerful and flexible portable power station designed for home backup, camping, and emergencies. It offers a very high power capacity of up to 10.8kWh when expanded, which is enough to run many heavy-duty home appliances and tools. The unit can handle a strong output of 3600 watts (expandable to 4500W with X-Boost), making it suitable for reliable backup power during outages. One of its biggest advantages is the fast charging ability—fully recharging in under 2 hours using a 240V outlet, or with solar panels in a few hours—giving you plenty of options to keep it powered up. It also supports multiple charging methods (EV charger, solar, car, generator), making it very versatile on the go.

The smart app and home panel let you monitor usage and customize how you draw power, which is helpful for saving on electricity bills and managing energy. On the downside, the DELTA Pro is quite heavy at 330 pounds, so it’s not very portable for casual use or carrying around easily. It’s also more expensive and complex than smaller UPS units, so it’s best suited for users who want a serious all-in-one backup system rather than a simple power strip with battery backup.

For those needing a large-capacity, expandable, and smart-managed power backup for home or outdoor adventures, the DELTA Pro is a solid choice. However, it is less ideal if you prefer something lightweight or more basic.

The EF ECOFLOW DELTA Pro is a powerful portable power station designed mainly for home backup, outdoor activities, and emergencies. It offers a strong power capacity starting at 3.6kWh that can be doubled to 7.2kWh with an extra battery, making it capable of running many heavy-duty devices quietly and without fumes. Its 3600W output, expandable to 4500W with X-Boost, means it can handle almost all household equipment during outages.

The unit supports multiple charging options, including very fast wall charging, solar panels, car, and EV stations, providing flexibility depending on your situation. It features 120V outlets along with surge protection and a clean power output to keep your devices safe. The smart app control lets you monitor battery life, temperature, and customize settings remotely, which is convenient for managing energy use.

The DELTA Pro weighs 183 pounds and has a sizable form factor, so it is less portable for casual use or light camping. Its price point and complexity are more suited for users needing serious backup power rather than occasional use. This unit functions well as a reliable, expandable home backup and solar generator but may be excessive for those requiring only a small, lightweight UPS for minor power needs.

The EF ECOFLOW 8kWh Home Battery Backup combines two DELTA Pro 3 units linked by a 50 Amp Hub to deliver a strong 8000W AC output, which is enough to power nearly all home appliances, including heavy users like dryers and heaters. Its battery capacity starts at about 4100Wh but can be expanded up to 48kWh, offering flexible backup power for 2 to 4 days depending on usage. This makes it well suited for serious home backup needs during outages or emergencies. With 18 outlets available, it can handle multiple devices at once.

The unit supports various charging methods such as solar panels and EV chargers, letting you top up without relying on fuel. It also features a fast 10 ms switch-over, which helps avoid interruptions to sensitive electronics like servers or entertainment systems. The quiet operation (around 30 dB) is a plus if you want a backup solution that won’t disturb your household. The device is portable with handles but weighs a substantial 230 pounds, so it’s best considered semi-stationary rather than truly portable.

Another highlight is its robust battery technology (LFP cells) and IP65 rating, which adds durability and safety, backed by a 5-year warranty. On the downside, this system is relatively heavy and likely pricey, which might not fit casual or light users. Its complexity and size may also be more than needed for smaller homes or simple backup setups. While it does not explicitly mention surge protection or AVR, its design implies built-in safeguards typical for high-end home backup units. The ECOFLOW app adds convenient remote monitoring and control, which is helpful but requires some tech comfort. This product is best suited for homeowners looking for a powerful, expandable, and quiet home backup power solution who can invest in a larger system for peace of mind during extended outages.