• Description
  • Why Buy From Us

BigBattery 48V 14.3kWh NEXUS LiFePO4 Battery

Nexus is the most affordable 14.3kWh LiFePO₄ off-grid powerhouses with a portable, compact build, and scalability to 215kWh for unstoppable outdoor home or cabin backup power.

Key Features

  • Performance: Uninterrupted, long-lasting power for any off-grid application.
  • Chemistry: Advanced LiFePO4 for safety and longevity.
  • Design: Rugged, floor-standing design for easy installation in tech closets, garages, cabins, or sheds.
  • Protection: Integrated BMS with quadruple safety redundancies.
  • Scalability: High-capacity, expandable storage solution up to 215kWh.
  • Applications: Off-grid solar, commercial backup, and home EPS.

Sleek & Compact Design

Our stackable, compact design comes with all the hardware you need for a straightforward setup, letting you get your off-grid system up and running efficiently in less time. Engineered for reliability in any off-grid environment, it delivers consistent power when you need it most.

Off-Grid Energy Reliability

With 280 Ah of capacity, 100 A continuous discharge, and peak support up to 110 A, NEXUS handles high-demand loads with ease. NEXUS’s smart thermal management enables charging from 32 °F to 113 °F and discharging down to -4 °F, making it a true all-weather energy solution.

Modular ESS That Grows With You

NEXUS supports parallel expansion up to 15 units, offering 215kWh total capacity. With RS485, CAN, and RJ45 communication ports, it’s ready to integrate seamlessly into new or existing inverter systems—ensuring full system transparency, automation, and control.

Legacy Product Parallel Compatibility

What's included:

51.2V 280AH-14.3KWH Energy storage box, with fire extinguisher (aerosol) & heater

Battery Specifications NEXUS 14.3KWh
SKU F-NXUS-48143-G1
System Voltage 48V
Nominal Voltage 51.2V
Chemistry LiFePO4
Usable Energy (kWh) 14.3kWh
Ah Capacity 280Ah
Cell Configuration 16S1P
Max Continuous Discharge 100A
Max Discharge Power 7.6kW
Max Discharge Peak 110A
Max Charge Current 100A
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 Temp Range 0°C to 45°C
Discharge Temp Range -20°C to 45°C
Optimal Discharge Temp +15°C to +35°C
Storage Temp Range (SoC >50%) -20°C~25°C
Humidity Range 10%-95% (No Condensation)
Weight (kg) ~142.8 kg ±5
Dimensions (WxHxD) 19.7 x 27.5 x 15.7 in (500×700×400 mm)
Altitude Limit <2000m
Max Connections 15 in parallel (up to 215.0kWh)
Communications RS485 / RJ45 / CAN
Protection Rating IP21
Certifications UN38.3
Installation Indoor Floor-standing
User Manual Click Here
Spec Sheet Click Here

Why Choose Green Vista Living


At Green Vista Living, we’re passionate about providing top-quality renewable energy and eco-friendly products that not only enhance your life but also help protect the planet. We’ve built our business with one mission in mind: to be the go-to destination for renewable energy solutions, outdoor gear, and off-grid supplies. When you shop with us, you’re not just getting innovative products—you’re joining a community that’s committed to sustainability.

We Put Our Customers First


As a small, dedicated team, we care deeply about your experience. Unlike large, faceless online companies, Green Vista Living offers a personal touch in everything we do. We're here for you from start to finish—whether you need product advice, support after a purchase, or just have questions. Our knowledgeable customer service team is always just a phone call or email away, ready to assist you in any way possible.

We Share Your Passion for the Planet


Our love for the outdoors and sustainable living runs deep. Most of our team hails from the mountains of Colorado, where renewable energy and the environment are part of daily life. So when you call Green Vista Living, you’ll speak directly with an expert who understands both the technical side of renewable products and the lifestyle they support. Whether you’re looking for solar generators, EV chargers, or any of our eco-friendly offerings, you can trust us to guide you with expertise and passion.

Trusted Industry Experts


Our close partnerships with the best brands in renewable energy and outdoor gear give us insider knowledge that you won’t find anywhere else. We’ve taken the time to carefully select products that stand out for their quality and reliability. At Green Vista Living, we believe in understanding our products inside and out so that we can help you make the right choice with confidence.

More Reasons to Love Green Vista Living


Price Match Guarantee: Thanks to our partnerships, we offer the best prices around. If you find a better deal, we’ll refund the difference.


Free Shipping: We offer free shipping on most orders to the lower 48 U.S. states, making your shopping experience even easier.


100% Secure Ordering: Our site uses SSL Encryption technology to keep your payment and personal information safe and secure.


Volume Discounts: For large orders, we’re happy to provide special pricing—just reach out for a custom quote.


Authorized Dealer: As an authorized dealer for all our brands, you’ll receive full manufacturer warranties with every order.


At Green Vista Living, we aim to make your renewable energy and outdoor experience as seamless and enjoyable as possible. With our unmatched customer service, expertise, and dedication to quality, you can shop with confidence, knowing you’re supporting a company that’s as committed to the planet as you are.

Frequently Asked Questions

Yes! We provide free and fast shipping on MOST orders within the continental United States. However, some specific brands and items will require a quote. You can live chat or call us for a quote
Most orders ship out within 1–2 business days and arrive within 3–5 business days depending on your location.
We offer easy returns as long as your item meets the conditions outlined in our Return Policy. Items must be unused, in original packaging, and returned within the specified return window.
Absolutely! Our in-house product experts are here to help. Live chat or call us 513-743-829 for personalized advice before or after your purchase.
Yes. All products include any applicable manufacturer warranties, and we’ll help you handle any warranty claims if needed.
Yes, we only sell 100% authentic, brand-new products, sourced directly from our manufacturers or authorized distributors.

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