Bluetti’s new EP900 home backup system offers huge capacity in a tiny footprint

With the right configuration, this modular battery can power the average U.S. home for 32 hours.

Thanks to the latest advances in battery technology whole-home solar backup systems like the Bluetti EP900 are becoming smaller, safer, and more powerful. Available in a range of storage capacities from 9,920 Wh up to an impressive 39.6 kWh, the Bluetti EP900 is a flexible, modular battery system for home and business designed with safety and convenience in mind, making it an intriguing new option for achieving power independence whether you’re looking for a simple solar power storage solution or an emergency power backup.

Founded in 2019, Bluetti is a relative newcomer to the battery backup market, but we’re already fans of their products—the Bluetti AC200 Max is one of the best solar generators we’ve tested this year. The EP900 is the latest addition to the company’s compact series of solar generators and battery backups that includes the EP500 Power Station, and it’s due for introduction in the U.S. in late May 2023. Here’s a closer look at what sets the Bluetti EP900 apart from other home battery backup systems and the technology that makes it all possible.

A safer battery

The Bluetti EP900 is built around lithium-ion phosphate battery technology, a relatively new and more stable alternative to traditional cobalt-based lithium-ion batteries. Unlike their traditional counterparts, LiFePO4 batteries are incredibly resistant to overheating, with a high thermal runaway threshold of 500 degrees Fahrenheit and producing only about 6% of the heat produced by cobalt-based designs when overcharged. The inherent heat resistance of this design makes the EP900 an incredibly appealing and safe option for installing at home. The EP900’s voltage, current, and other operating conditions are also constantly monitored by an internal battery management system, adding a further layer of safety and ensuring that the unit operates as intended.

Power backup on your terms

The Bluetti EP900 comprises a system of stackable inverter and battery modules, each measuring 25 inches wide, 12.7 inches deep, and 14.4 inches high. This modular design gives the unit a super-compact footprint and allows it to stack in small spaces and stand freely without applying extra pressure to your walls. Each module is also constructed within a rugged aluminum IP65-rated chassis that’s completely impervious to dust and water, so the EP900 can be installed indoors or outdoors as long as the environment stays between -4 and 122 degrees Fahrenheit.

The EP900 outputs a maximum of 9 kW at 120 and 240 volts, and is ready to use with any existing solar panels. At its base configuration, the system consists of one EP900 inverter and two B500 batteries for a total capacity of 9,920 Wh, which is enough power to keep the average U.S. household up and running for roughly 8 hours. Each inverter can also be paired with two to four batteries, and up to two inverters can be connected in parallel, giving the EP900 a maximum potential charge of 39.6 kWh spread across eight batteries. This flexibility makes the Bluetti EP900 an appealing introduction to solar power storage and home battery backups with the potential for expanding your setup down the line.

When installation time comes, Bluetti offers a few perks to sweeten the deal including an onsite installation service and a 10-year warranty. Once the EP900 is up and running, users can download the Bluetti companion app to manage their power storage and schedule load shifting to use their EP900 systems to charge during off-peak hours and switch on when grid electricity is more expensive. The app provides access to data including solar power data, battery health, energy consumption, and other convenient metrics as well.

Is the Bluetti EP900 right for you?

It’s never a bad time to start thinking about high-capacity power storage, whether you’re looking to mitigate power outages, save money, or live entirely off-grid. The Bluetti EP900 features some of the newest and safest battery technology available combined with high-capacity storage and an incredibly user-friendly design, allowing it to go toe-to-toe with comparable systems like the nickel-manganese-cobalt Tesla Powerwall (which, it’s reported, may soon switch to a similar LiFePO4 design). We don’t yet have any cost information for the Bluetti EP900, but the company’s comparable EP600 system has already seen some success in Europe, so we’ll be keeping an eye out for its appearance here in the U.S. this spring.

Sponsored by Bluetti.