EG4 Electronics-WallMount 48V 280Ah 14.3kWh Indoor Battery
EG4 Electronics-WallMount 48V 280Ah 14.3kWh Indoor Battery
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SKU  PES-ESS-BTS-0223

EG4 Electronics-WallMount 48V 280Ah 14.3kWh Indoor Battery

EG4 Electronics-WallMount 48V 280Ah 14.3kWh Indoor Battery

$3,700.00 USD
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  • SKU:PES-ESS-BTS-0223
  • Brands: EG4 Electronics
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Lifetime Customer Support

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EG4 Electronics WallMount 48V 280Ah 14.3kWh Indoor Battery - EG4LP48V280AHIDWMBV2

The EG4 WallMount Indoor 280Ah Lithium Battery delivers an impressive 14.3kWh of energy storage capacity designed specifically for indoor residential and commercial applications. Whether you're aiming to reduce utility costs, achieve energy independence, or ensure reliable backup power during outages, this advanced lithium iron phosphate battery provides the perfect solution. With a powerful 200A maximum continuous output and intelligent battery management system, the WallMount Indoor Battery seamlessly integrates with leading inverter brands including EG4, Sol-Ark, Victron, Growatt, and more. The integrated self-heating feature ensures reliable performance even in unheated indoor spaces, while the onboard LCD touchscreen allows you to easily monitor and control your battery system. Backed by a comprehensive 10-year warranty and engineered for over 8,000 cycles at 80% depth of discharge, this battery represents a long-term investment in energy security and independence.

Key Features

  • 14.3kWh usable energy storage capacity provides substantial backup power for whole-home or commercial applications
  • 48V (51.2V nominal) system voltage compatible with standard residential battery-based inverters
  • Lithium Iron Phosphate (LiFePO4) chemistry delivers superior safety, longevity, and thermal stability compared to other lithium technologies
  • 200A maximum continuous discharge current with 300A surge capability for 3 seconds handles high-demand appliances and motor starting
  • Built-in 200A Battery Management System (BMS) continuously monitors and protects against overcharge, over-discharge, and thermal issues
  • Integrated 600A busbars enable high-current parallel connections for expandable system capacity
  • Self-heating function automatically activates below 32°F, enabling safe charging and operation in cold environments
  • Onboard LCD touchscreen provides real-time monitoring of voltage, current, state of charge, temperature, and system status
  • Dual fire arrestors and Emergency Stop (E-Stop) Rapid Shutdown (RSD) functionality ensure maximum safety compliance
  • EG4 Connect closed-loop communication enables smart energy management with compatible inverters
  • Wall-mountable design saves valuable floor space in mechanical rooms, garages, or utility areas

Specifications

MPN EG4LP48V280AHIDWMBV2
Vendor EG4 Electronics
Product Type Indoor Wall-Mount Lithium Battery
Nominal Voltage 51.2V (48V system)
Capacity 280Ah
Total Energy Capacity 14.3kWh @ 25°C, 100% SOC
Chemistry Lithium Iron Phosphate (LiFePO4)
Max Continuous Charge Current 200A
Max Continuous Discharge Current 200A
Peak Surge Current 300A (3 seconds)
Battery Management System Built-in 200A BMS
Busbar Rating Integrated 600A Busbars
Charging Temperature Range 32°F to 113°F (0°C to 45°C)
Discharging Temperature Range -4°F to 131°F (-20°C to 55°C)
Self-Heating Function Yes, activates below 32°F
Design Life 8,000+ cycles @ 80% DoD
Lifetime Energy Production 82.6 MWh
Display Onboard LCD Touchscreen
Communication Protocol CAN, RS485 (EG4 Connect compatible)
Safety Features Dual Fire Arrestors, E-Stop RSD, BMS Protection
Dimensions (H × W × D) 34.6" × 22.3" × 9.1" (88 × 56.6 × 23.2 cm)
Weight 282 lbs (128 kg)
Certifications UL 1973, UL 9540A, UL 9540 (with compatible inverters)
Warranty 10 Years
Application Indoor Residential & Commercial Energy Storage

Installation & Application

The EG4 WallMount Indoor 280Ah Battery is engineered for residential and commercial energy storage systems where space efficiency and indoor installation are priorities. With its 14.3kWh capacity, this battery provides substantial backup power for whole-home applications, powering essential loads including HVAC systems, refrigeration, lighting, well pumps, and electronics during grid outages. The wall-mount design maximizes usable floor space in garages, utility rooms, or dedicated battery rooms. The battery seamlessly integrates with popular hybrid inverters from EG4, Sol-Ark, Victron, Growatt, Deye, Schneider, Luxpower, and Megarevo through closed-loop communication protocols. For larger energy requirements, multiple batteries can be paralleled using the integrated 600A busbars and compatible paralleling cables. The intelligent BMS continuously monitors cell voltages, temperatures, and current flow to ensure optimal performance and longevity. Professional installation by a qualified solar installer or electrician ensures proper system sizing, electrical connections, and compliance with local codes including NEC 2020/2023 requirements.

Warranty & Compliance

  • Comprehensive 10-year manufacturer warranty covering defects in materials and workmanship
  • UL 1973 certified for stationary battery energy storage systems
  • UL 9540A fire safety tested for residential and commercial applications
  • UL 9540 listed when paired with EG4 18kPV, 12kPV, and FlexBOSS21 inverters
  • Designed for over 8,000 cycles at 80% depth of discharge, ensuring 10+ years of daily cycling
  • Manufactured to exceed industry standards for safety, performance, and reliability
  • Lifetime USA-based technical support from EG4 Electronics

What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

EG4 Electronics WallMount 48V 280Ah 14.3kWh Indoor Battery - EG4LP48V280AHIDWMBV2

The EG4 WallMount Indoor 280Ah Lithium Battery delivers an impressive 14.3kWh of energy storage capacity designed specifically for indoor residential and commercial applications. Whether you're aiming to reduce utility costs, achieve energy independence, or ensure reliable backup power during outages, this advanced lithium iron phosphate battery provides the perfect solution. With a powerful 200A maximum continuous output and intelligent battery management system, the WallMount Indoor Battery seamlessly integrates with leading inverter brands including EG4, Sol-Ark, Victron, Growatt, and more. The integrated self-heating feature ensures reliable performance even in unheated indoor spaces, while the onboard LCD touchscreen allows you to easily monitor and control your battery system. Backed by a comprehensive 10-year warranty and engineered for over 8,000 cycles at 80% depth of discharge, this battery represents a long-term investment in energy security and independence.

Key Features

  • 14.3kWh usable energy storage capacity provides substantial backup power for whole-home or commercial applications
  • 48V (51.2V nominal) system voltage compatible with standard residential battery-based inverters
  • Lithium Iron Phosphate (LiFePO4) chemistry delivers superior safety, longevity, and thermal stability compared to other lithium technologies
  • 200A maximum continuous discharge current with 300A surge capability for 3 seconds handles high-demand appliances and motor starting
  • Built-in 200A Battery Management System (BMS) continuously monitors and protects against overcharge, over-discharge, and thermal issues
  • Integrated 600A busbars enable high-current parallel connections for expandable system capacity
  • Self-heating function automatically activates below 32°F, enabling safe charging and operation in cold environments
  • Onboard LCD touchscreen provides real-time monitoring of voltage, current, state of charge, temperature, and system status
  • Dual fire arrestors and Emergency Stop (E-Stop) Rapid Shutdown (RSD) functionality ensure maximum safety compliance
  • EG4 Connect closed-loop communication enables smart energy management with compatible inverters
  • Wall-mountable design saves valuable floor space in mechanical rooms, garages, or utility areas

Specifications

MPN EG4LP48V280AHIDWMBV2
Vendor EG4 Electronics
Product Type Indoor Wall-Mount Lithium Battery
Nominal Voltage 51.2V (48V system)
Capacity 280Ah
Total Energy Capacity 14.3kWh @ 25°C, 100% SOC
Chemistry Lithium Iron Phosphate (LiFePO4)
Max Continuous Charge Current 200A
Max Continuous Discharge Current 200A
Peak Surge Current 300A (3 seconds)
Battery Management System Built-in 200A BMS
Busbar Rating Integrated 600A Busbars
Charging Temperature Range 32°F to 113°F (0°C to 45°C)
Discharging Temperature Range -4°F to 131°F (-20°C to 55°C)
Self-Heating Function Yes, activates below 32°F
Design Life 8,000+ cycles @ 80% DoD
Lifetime Energy Production 82.6 MWh
Display Onboard LCD Touchscreen
Communication Protocol CAN, RS485 (EG4 Connect compatible)
Safety Features Dual Fire Arrestors, E-Stop RSD, BMS Protection
Dimensions (H × W × D) 34.6" × 22.3" × 9.1" (88 × 56.6 × 23.2 cm)
Weight 282 lbs (128 kg)
Certifications UL 1973, UL 9540A, UL 9540 (with compatible inverters)
Warranty 10 Years
Application Indoor Residential & Commercial Energy Storage

Installation & Application

The EG4 WallMount Indoor 280Ah Battery is engineered for residential and commercial energy storage systems where space efficiency and indoor installation are priorities. With its 14.3kWh capacity, this battery provides substantial backup power for whole-home applications, powering essential loads including HVAC systems, refrigeration, lighting, well pumps, and electronics during grid outages. The wall-mount design maximizes usable floor space in garages, utility rooms, or dedicated battery rooms. The battery seamlessly integrates with popular hybrid inverters from EG4, Sol-Ark, Victron, Growatt, Deye, Schneider, Luxpower, and Megarevo through closed-loop communication protocols. For larger energy requirements, multiple batteries can be paralleled using the integrated 600A busbars and compatible paralleling cables. The intelligent BMS continuously monitors cell voltages, temperatures, and current flow to ensure optimal performance and longevity. Professional installation by a qualified solar installer or electrician ensures proper system sizing, electrical connections, and compliance with local codes including NEC 2020/2023 requirements.

Warranty & Compliance

  • Comprehensive 10-year manufacturer warranty covering defects in materials and workmanship
  • UL 1973 certified for stationary battery energy storage systems
  • UL 9540A fire safety tested for residential and commercial applications
  • UL 9540 listed when paired with EG4 18kPV, 12kPV, and FlexBOSS21 inverters
  • Designed for over 8,000 cycles at 80% depth of discharge, ensuring 10+ years of daily cycling
  • Manufactured to exceed industry standards for safety, performance, and reliability
  • Lifetime USA-based technical support from EG4 Electronics

What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

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Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

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Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Shop Securely, Trusted Supplier, 100% Satisfaction

Trusted Company, Real Products, Lifetime Support

Avoid Scams, Buy with Confidence, Enjoy Peace of Mind

Manufacturer Warranty, Exceptional Service

Be Smart, Buy From an Authorized Dealer

When you choose Portlandia Electric Supply, you’re buying real products from a trusted company with established supplier relationships. Enjoy peace of mind with 100% manufacturer warranty coverage and lifetime customer support. In an age where online shopping is fraught with risks, it’s crucial to avoid fly-by-night websites that skirt regulations. Shop with confidence, knowing you’re getting genuine quality and reliable service.

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