Expand your backup power with the FIRMAN Zero-E Battery expansion pack. Adding 1,040Wh of capacity to your FIRMAN Zero-E Energy Storage System, this slide-lock battery connects effortlessly—just slide it into place until it clicks. Stack up to 10 batteries for a total capacity of 11,440Wh, giving you serious energy for extended outages or off-grid use.

Charge it independently or as part of your Zero-E system. An onboard 100W USB-C port powers laptops, tablets, phones, drones, and more. Built with Lithium Iron Phosphate technology, the Zero-E Battery delivers safe, reliable performance with over 4,000 charge cycles. Whether you're preparing for emergencies or powering adventures, this expansion pack keeps you going longer.

The FIRMAN Zero-E Energy Storage System delivers clean, emission-free power wherever you need it—perfect for homes, apartments, RVs, and vehicles. With 4,000 starting watts and 2,000 running watts, the Zero-E can power small to medium appliances, electronics, and essential devices.

Featuring advanced EPS (Emergency Power Supply) pass-through technology, the Zero-E automatically backs up your fridge, modem, sump pump, or security system during an outage—switching to battery power in milliseconds. Its Lithium Iron Phosphate battery ensures safe operation, 4,000+ charge cycles, and long-term reliability.

Need more runtime? Easily expand with slide-on Zero-E batteries—up to 10 add-ons for a total of 11,440Wh capacity. Power up your devices with six 120V outlets, a TT-30R RV outlet, four USB-A ports, two 100W USB-C ports, a 12V cigarette outlet, a 12V DC port, and a Qi wireless charger.

Recharge the Zero-E your way: from a standard wall outlet, your vehicle’s 12V socket, or up to 400W of solar input. Whether you're preparing for emergencies or living off-grid, the Zero-E is your all-in-one portable power solution.

Zero E

Zero E Portable Expandable Power Station

Parallel Cables for Zero E (14AWG x 4.9ft)

Zero E Expansion Power Pack +1000

Zero-E System plus Expansion Battery