Description
The BigBattery 48V 15kWh NEXUS LiFePO₄ is a high-capacity, floor-standing battery built for whole-home backup, larger off-grid cabins, and 48V solar systems that need long runtimes and dependable power.
It takes the same NEXUS architecture (LFP cells + smart BMS + rugged enclosure) and ups the storage to a full 15kWh, so you get more usable energy without having to parallel a bunch of smaller batteries. This makes it ideal for sites running pumps, mini-splits, compressors, shop tools, or inverter/chargers with higher surge. LiFePO₄ chemistry gives you safety, long cycle life, and low maintenance, while the integrated BMS handles protections, balancing, and temperature.
Because it’s modular, you can parallel multiple NEXUS packs to build large banks for estate, light commercial, or community storage use. It’s for people who want a plug-and-power 48V block, not a DIY rack.
Key Features
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48V, 15kWh LiFePO₄ energy storage (high-capacity NEXUS variant)
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Integrated smart BMS (OV/UV, over-current, temp, cell balancing)
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Floor-standing, indoor/outdoor-ready enclosure
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Long cycle life, low maintenance vs. lead-acid
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Parallel-ready to scale beyond 15kWh
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Compatible with most 48V inverter/chargers
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Ideal for whole-home backup, off-grid cabins, light commercial
| Specification | Detail |
|---|---|
| Product Name | BigBattery 48V 15kWh NEXUS LiFePO₄ Battery |
| Chemistry | LiFePO₄ (LFP) |
| Nominal Voltage | 48V (51.2V nominal) |
| Total Energy | 15 kWh |
| Approx. Capacity | ~300Ah |
| Usable Energy | ~14–14.5 kWh (typical recommended DoD) |
| Continuous Discharge | 100–120A class (short surge higher) |
| BMS | Built-in smart BMS with protections & balancing |
| Form Factor | Floor-standing, modular, indoor/outdoor |
| Scalability | Parallel multiple NEXUS units for larger banks |
| Typical Applications | Off-grid solar, whole-home backup, cabins, light commercial |
Specs & Info