• Description
  • Why Buy From Us

EG4 WallMount Indoor Battery 48V 314Ah | 16kWh UL9540A | Self-Heating

Note: Pre-order ETA – 25th of November

Power your home or backup system with the EG4 WallMount Indoor Battery, engineered for high-capacity energy storage and long-term reliability. This 48V 314Ah, 16kWh lithium module features advanced self-heating technology for dependable performance in cold environments, along with UL9540A safety certification. Designed for clean indoor installation, it delivers stable, high-output energy for residential, off-grid, and hybrid systems.

KEY FEATURES

  • Cross-Compatible with Other EG4 Models: Seamlessly integrates with existing
    EG4 battery systems for flexible scaling and expanded storage capacity. (Note: UL9540 Certified only with Flexboss 18 & Flexboss 21)
  • Hybrid Wall or Floor Mount Design: Flexible installation options with a durable,
    space-saving enclosure (IP20 rated).
  • High-Capacity Storage: 16kWh nominal energy and 314Ah capacity for
    reliable, high-output performance.
  • Auto-ID Technology: Automatically recognizes and syncs new batteries during
    installation, simplifying system setup and configuration.

Specifications 

Category Details
Product Type Low Voltage LFP Battery
Battery Type Lithium Iron Phosphate (LFP)
Model Number WM-48-314-IN-XX (XX = 00–99)
Nominal Energy Capacity 16kWh
Usable Energy (DOD%) 12.86kWh (80% recommended)
Voltage Range 47.5 – 57.6 VDC
Nominal Voltage 51.2 VDC
Capacity 314Ah
Charging Voltage Range 56 – 57 VDC
Discharging Cut-off Voltage 47.5 VDC
Max Continuous Charge Current 157A
Max Continuous Discharge Current 200A
Continuous Charge/Discharge Power 8 kW / 10.2 kW
Recommended Charge/Discharge Rate 0.5C
Peak Power 12.8kW (3 sec)
Round-trip Efficiency 95%
Max Parallel Units 16
Protection Features Over/Under Voltage, Over-Current, Short Circuit, High/Low Temp
BMS Integrated, Active Balancing
Communication Protocols RS485, CAN
Battery Breaker 250A
Storage Temp Range -4 – 131°F (-20 – 55°C)
Humidity Range 5% – 95% RH (non-condensing)
Altitude 9843 ft (<3000 m)
Cooling Method Natural Convection
Dimensions (H × W × D) 34.1 × 18.1 × 9.6 in (865 × 460 × 245 mm)
Operating Temperature Charge: 32 – 122°F (0 – 50°C) • Discharge: -4 – 131°F (-20 – 55°C)
Recommended DOD Setting Note Do not set below 20% to maintain 80% DOD
Storage Temp Note >3 months storage: recommended 59 – 86°F (15 – 30°C)
Weight 293.2 lbs (133 kg)
Enclosure Rating IP20
Mounting Options Wall / Floor mount
Display/Indicators LED Status
Connector Type Degson quick connector / screw terminal
UL 1973 Yes
UL 9540 DC ESS, AC ESS with EG4 18kPV, 12kPV, FlexBOSS 21, FlexBOSS 18*
UL 9540A Battery-to-battery spacing: 6 in
UN 38.3 Yes
FCC Part 15 (EMC) Yes
Protection Class Class B
Cycle Life (70% EOL) 10,000 cycles @ 0.5C, 25°C, 80% DOD
Design Life 10 years
Warranty 10 years or 10,000 cycles
Application Type Residential / Commercial / Off-grid / Backup
Lifetime Energy Throughput 115.7 MWh

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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