A single battery covers an evening. Whole-house backup through a multi-day storm needs far more, and refueling a generator is not an option for everyone. The Pecron FP5000-48V adds 5120Wh of stored power so your system carries the essentials for days, not hours.
The FP5000-48V is a high-capacity plug-in expansion battery for Pecron's 48V LiFePO4 power stations. It is built for serious home backup and off-grid setups that need long runtime from a quiet, fuel-free system.
Why add the FP5000-48V expansion battery
- 5120Wh of extra LiFePO4 capacity, one of the largest single expansion batteries available.
- Built on LiFePO4 cells rated for 3500+ cycles to 80 percent.
- Cascades with the E1500LFP, E1000LFP, E3600LFP, F3000LFP, and F5000LFP and other 48V systems.
- Battery heating for reliable charging in cold conditions.
- Stack multiple batteries to build a true whole-home backup bank.
What the FP5000-48V keeps running longer

Whole-home backup: carry the refrigerator, well pump, Wi-Fi, and medical devices through a multi-day outage.
Off-grid living: bank a full day of solar to cover the night and cloudy stretches.
Worksite power: run tools and equipment for long shifts without hauling fuel.
Specifications
| Capacity | 5120Wh (51.2V / 100Ah) |
|---|---|
| Battery type | LiFePO4, 3500+ cycles to 80 percent |
| Compatible units | E1500LFP, E1000LFP, E3600LFP, F3000LFP, F5000LFP and other 48V systems |
| Features | Battery heating, cascading host support |
| Weight | 89.9 lbs (40.8 kg) |
| Dimensions | 22.6 x 15 x 7.3 in |
| Operating temperature | -4F to 113F |
Frequently asked questions
Which units does the FP5000-48V work with? It cascades with Pecron 48V LiFePO4 stations, including the E3600LFP, the E1500LFP, the E1000LFP, F3000LFP, and F5000LFP.
Can I connect more than one? Yes. The 48V platform supports multiple expansion batteries so you can scale to whole-home capacity.
Does it charge in the cold? Yes. It includes battery heating for safe charging in low temperatures.
See the full lineup of expandable power stations to plan your system.