Extend your power with the Firman Zero-E B104201 Expansion Pack +1000. Adding 1040Wh of capacity to your Zero-E Power Station, this slide-lock battery pack connects seamlessly — stack up to 10 packs for a total of 11,440Wh. Built with Lithium Iron Phosphate (LFP) technology, it delivers over 4,000 charge cycles for long-term reliability. Use it independently with its built-in 100W USB-C port, or combine with your Zero-E system for serious backup power. Lightweight, safe, and versatile, the B104201 keeps your essentials running during outages, road trips, or off-grid living.
We’ll try to get your question answered within 24 hours by a Best Buy customer or brand representative.
Add 1040Wh per pack and stack up to 10 batteries for a massive 11,440Wh total capacity.
Depend on LFP chemistry with 4,000+ cycles, ensuring long-lasting, safe, and stable energy.
Charge laptops, tablets, and devices directly with a high-speed 100W USB-C PD in/out port.
Expansion is effortless — simply slide the pack into place until it clicks, no tools required.
At only 28.6 lbs, the Zero-E Expansion Pack is compact and easy to move wherever extra power is needed.