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When dependable power is not optional, the BigBattery 48V 15kWh NEXUS LiFePO4 Battery gives you the confidence to run your home, RV, or off-grid system without interruption. Designed for real-world use, this high-capacity lithium battery combines performance, safety, and long-term value in one compact, floor-standing unit.
Whether you are preparing for outages, building a solar-powered lifestyle, or powering a mobile business, this system is engineered to handle it all. With advanced LiFePO4 battery chemistry, you get consistent output, longer lifespan, and greater peace of mind compared to traditional battery options. Instead of worrying about downtime, you can focus on what matters keeping your essentials running smoothly and your energy system working efficiently day after day.
Backed by a 12-year warranty and lifetime USA-based technical support, you are supported every step of the way. When you choose Outbound Power, you are choosing a team that understands real-world power needs and helps you build a system that works when it matters most.
With a robust 15kWh capacity and 300Ah output, this battery supports high-demand appliances, tools, and systems. From refrigerators and HVAC systems to power tools and electronics, you get reliable energy without constant monitoring or limitations.
Built with lithium iron phosphate technology, this battery delivers over 6,000 cycles of use. That means years of dependable performance, reduced replacement costs, and safer operation compared to traditional lead-acid or standard lithium-ion batteries.
The built-in Battery Management System continuously monitors voltage, current, and temperature. It protects your system from overcharging, overheating, and short circuits, ensuring stable and worry-free operation in demanding environments.
Cold temperatures can reduce battery efficiency, but not here. The integrated self-heating feature allows the system to perform in low temperatures, charging as low as 32°F and discharging down to -4°F for true all-weather reliability.
Safety is built into the core of the system. The integrated aerosol fire suppression system provides an extra layer of protection, helping safeguard your equipment, your property, and your investment.
Start with 15kWh and expand up to 225kWh by connecting multiple units in parallel. This flexibility makes it ideal for both small residential setups and larger commercial energy storage systems.
No complicated wall mounting required. The compact, stackable design allows you to place the battery in garages, utility rooms, sheds, or cabins, making installation faster and more convenient.
BigBattery provides a limited 12-year warranty policy, ensuring the absence of defects in materials, workmanship, and performance during the warranty period.
BigBattery 48V 15kWh NEXUS LiFePO4 Battery Specifications
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|---|---|
| Battery Model | NEXUS 15kWh |
| GTIN/UPC | 00199874694771 |
| System Voltage | 48V |
| Nominal Voltage | 51.2V |
| Chemistry | LiFePO4 |
| Usable Energy | 15kWh |
| Ah Capacity | 300Ah |
| Cell Configuration | 16S1P |
| Max Continuous Discharge Current | 140A |
| Max Continuous Power | 7.6kW |
| Max Discharge Peak Current | 270A (1 second) |
| Max Charge Current | 140A |
| Charging Voltage Range | 53.5V – 57.6V |
| Operating Voltage Range | 48V – 57.6V |
| Max Charge Voltage | 57.9V |
| Suggested Low Voltage Cutoff | 50.8V |
| Charge Temperature Range | 32°F – 113°F |
| Discharge Temperature Range | -4°F – 113°F |
| Optimal Discharge Temperature | 59°F – 95°F |
| Storage Temperature Range (SoC > 50%) | 1 month: -4°F – 113°F3 months: -4°F – 95°F6 months: -4°F – 77°F |
| Humidity Range | 10% – 95% (No Condensation) |
| Weight | ~315 lbs |
| Dimensions (W × H × D) | 19.7 × 27.5 × 15.7 in (500 × 700 × 400 mm) |
| Altitude Limit | < 2000 m |
| Max Connections | 15 in parallel (up to 225kWh) |
| Communications | RS485 / RJ45 / CAN |
| Protection Rating | IP54 |
| Installation | Indoor Floor-standing |
Yes! Outbound Power is an Authorized Dealer for every single brand and product on our store.
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Order Processing Time
Most products are processed within 1-3 business days. If there is a delay in processing your order, we will alert you with as much information as possible about what to expect.
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