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The BigBattery 48V 15kWh NEXUS LiFePO4 Battery Delivers Scalable Power So That You Stay Powered In Any Situation
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.
BigBattery 48V 15kWh NEXUS LiFePO4 Battery Features
High Capacity 15kWh Storage So That You Power More With Less Stress
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.
Advanced LiFePO4 Chemistry For Long Lifespan And Safe Operation
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.
Integrated Smart BMS Protection So That Your System Stays Safe
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.
Self Heating Function For Reliable Cold Weather Performance
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.
Built In Thermal Suppression For Enhanced Safety And Peace Of Mind
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.
Modular Expansion Design So That Your Power Grows With Your Needs
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.
Compact Floor Standing Design For Easy Setup And Flexible Placement
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.
What's Included
1 x BigBattery 48V 15kWh NEXUS LiFePO4 Battery
3 x 5-Foot Battery-To-Inverter Communication Cables
Get answers to the most frequently-asked questions customers ask before placing an order.
Is Outbound Power an Authorized Dealer?
Yes! Outbound Power is an Authorized Dealer for every single brand and product on our store.
How long will it take for my order to arrive?
Shipping times vary depending on your location and the product or products ordered.
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.
After order processing is complete, you will receive tracking information to monitor your order while it is in transit.
Order Shipping Time Following processing, it may take between 3 and 8 days to arrive, depending on your location.
Please refer to the product page for your item and reference the estimated delivery time frame for more details.
Additionally, you can see the estimated delivery time frame during checkout and receive a tracking number once your order ships.
What are your shipping rates? Do you offer free shipping?
Everything on our store ships for free. Really!
What is Outbound Power's return policy?
Most items may be returned within 30 days of delivery. Please refer to our Returns & Exchanges policy to determine what items are eligible. Returns are not accepted beyond 30 days following delivery.
Are Outbound Power products used/old/refurbished?
Everything sold on our website is brand-new.
Do you price match?
No — we price BEAT! Please refer to our Price Beat Promise for full details.
I like to jack re ed 5000 Plus it's a excellent unit I have it for my home and camping and traveling good price at this time from outbound and God bless and thank you
The purchase and delivery went smooth and timely. I haven't used the fridge yet besides cooling it down once, which it did. I'm looking forward to putting it to full use.
Hi Robert, thank you for your positive feedback! We're glad the purchase and delivery process met your expectations. We hope the freezer serves you well and look forward to hearing about your experience once you start using it fully. Enjoy!
Great pricing. When I am ready to upgrade, I plan on doing business with you all again. You value customers and that is greatly appreciated. Thanks for everything.
Thank you for your kind words and support! We’re glad to hear you’re satisfied with our pricing and service. We look forward to assisting you with your upgrade when you’re ready. Thanks again for choosing Outbound Power, and please let us know if we can ever be of service.
Exact fit to the Cummins 4500i small battery compartment.
Thank you for your great review! We're glad the battery fit perfectly and met your expectations. If you need anything else, please don’t hesitate to reach out, we’re always here to help.
Hi Sam, thank you for your fantastic review! We're so glad to hear the Pecron Trolley Kit works great for you. If you need any further assistance, feel free to reach out. Cheers!
This was purchased to run a small compressor when our crews are on job sites where running and moving power cords is inconvenient and time consuming. The generator is lightweight and perfect for the task. We're now investing in a second unit.
Thank you for the great review! We’re glad to hear it is making work easier. We truly appreciate your business. Please let us know if there is anything more we can do to be of service!
I like outbound because they give a good deal discount called. They help when you call nice people when you call the number they answer and help thank you
Hi Melvin, thank you for your kind words! We're glad you had a great experience and appreciate your support. If you need anything else, we're here to help!
Excellent service with excellent pricing. By far the best price I could find on the battery. Delivery arrived in perfect condition. love all the tracking information.
Thank you so much for the kind review! We’re glad we could provide a great price and that everything arrived to your satisfaction. We also appreciate you mentioning the tracking updates. We want every customer to feel informed and confident from order to delivery. Thanks again for choosing Outbound Power and please let us know if we can ever be of service!
Thank you for the positive feedback! We strive to provide excellent customer service and we're glad to hear that you had a great experience with us. We appreciate your support and hope to continue serving you in the future!
