EG4 Electronics LL V2 12V V2 400AH Lithium Iron Phosphate Battery
EG4 LL 12V 400AH Lithium Iron Phosphate Battery – Reliable 5.12kWh Power Storage
EG4 Electronics LL V2 12V V2 400AH Lithium Iron Phosphate Battery
EG4 LL 12V 400AH Lithium Iron Phosphate Battery – Reliable 5.12kWh Power Storage
truck
In Stock

Get yours today!

truck
9+ sold

In the last 7 days

truck
Flat Rate Shipping - Calculated at Checkout

Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

Trusted by 1,000s of Contractors & Installers
In Stock
SKU  PES-ESS-BTS-0226

EG4 Electronics LL V2 12V V2 400AH Lithium Iron Phosphate Battery

EG4 Electronics LL V2 12V V2 400AH Lithium Iron Phosphate Battery

OEM Authorized Dealer BABA Compliant Full OEM Warranty 7-10 Business Day Delivery
$1,298.68 USD
$ $1,298.68 USD
Sale Sold out

Secure Payment Methods

Visa Mastercard PayPal American Express Discover
truck
In Stock

Get yours today!

truck
9+ sold

In the last 7 days

truck
Flat Rate Shipping - Calculated at Checkout

Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

In High Demand! Order Now To Secure Your Items

form icon
Request a Free Quote
Support Agent

Got Questions? We’re Here to Help!

Our support team is ready to assist you with product guidance, order details, or any questions you might have.
phone (888) 876-0007
phone Instant Live Chat
phone Mon-Fri 10am-6pm EST
View full details

Specifications

Voltage 12V
Capacity 400Ah
Product Category Battery

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

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 ® LL 12V 400AH Lithium Iron Phosphate Battery – Premium Power with Lifetime Reliability

The EG4 LL 12V 400AH Lithium Iron Phosphate Battery is the latest evolution in energy storage, offering unmatched durability, efficiency, and ease of use. Engineered with EG4 ®'s signature Lifetime Lithium (LL) technology, this 12.8V (12V) battery delivers a powerful 5.12kWh capacity and features an advanced 200A internal BMS, making it ideal for both residential and commercial energy systems.

Built with 16 UL-listed prismatic 3.2V LiFePO4 cells, the EG4 LL 12V 400AH Lithium Iron Phosphate Battery undergoes rigorous testing through 7,000 deep discharge cycles at 80% DoD. This means users can count on over 15 years of daily use without performance degradation—thanks to its incredible 99% operational efficiency and robust cell construction.

Designed for ultimate user convenience, the battery includes an LCD screen for real-time monitoring and supports closed-loop inverter communications, including Victron and EG4. Its plug-and-play interface and compatibility with a wide range of energy setups make installation quick and easy.

Every unit includes a 1-foot RS485 communication cable and a parallel cable set. For every six units purchased, a RS485 USB battery communication cable is also included (shipped separately).

Features & Benefits

  • Tier One A+ Lithium Cells – Premium quality for extended reliability

  • 99% Operational Efficiency – Exceptional energy output with minimal loss

  • Long Lifespan – 7,000 cycles at 80% DoD; 10–20-year design life

  • Flexible Installation Options – Modular design with versatile racking compatibility

  • Eco-Friendly – 100% lead-free and recyclable LiFePO4 chemistry

  • Built-in Smart BMS – Intelligent control for voltage, current, temperature & battery health

  • Expandable System – Easily scale your battery bank without performance compromise

  • Inverter-Ready – Closed-loop communication with EG4 & Victron systems

Key Specifications

  • Nominal Voltage: 12.8V

  • Capacity: 400Ah

  • Energy Storage: 5.12kWh

  • Internal BMS Rating: 200A

  • Dimensions (L×W×H): 19 in × 6.1 in × 20.2 in (48.2 cm × 15.5 cm × 51.3 cm)

  • Weight: 98.1 lbs (44.5 kg)

  • Design Life: 7,000 Cycles @ 80% Depth of Discharge

  • Communication Ports: RS485, Plug-and-Play Interface

  • Display: Integrated LCD Monitoring Screen

The EG4 LL 12V 400AH Lithium Iron Phosphate Battery is the perfect choice for solar energy storage, off-grid systems, and backup power applications. It combines top-tier performance, extended life, and seamless integration into modern energy systems. Power your future with confidence—choose the EG4 LL 12V 400AH Lithium Iron Phosphate Battery today.

Customer Reviews

Be the first to write a review
0%
(0)
0%
(0)
0%
(0)
0%
(0)
0%
(0)

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 ® LL 12V 400AH Lithium Iron Phosphate Battery – Premium Power with Lifetime Reliability

The EG4 LL 12V 400AH Lithium Iron Phosphate Battery is the latest evolution in energy storage, offering unmatched durability, efficiency, and ease of use. Engineered with EG4 ®'s signature Lifetime Lithium (LL) technology, this 12.8V (12V) battery delivers a powerful 5.12kWh capacity and features an advanced 200A internal BMS, making it ideal for both residential and commercial energy systems.

Built with 16 UL-listed prismatic 3.2V LiFePO4 cells, the EG4 LL 12V 400AH Lithium Iron Phosphate Battery undergoes rigorous testing through 7,000 deep discharge cycles at 80% DoD. This means users can count on over 15 years of daily use without performance degradation—thanks to its incredible 99% operational efficiency and robust cell construction.

Designed for ultimate user convenience, the battery includes an LCD screen for real-time monitoring and supports closed-loop inverter communications, including Victron and EG4. Its plug-and-play interface and compatibility with a wide range of energy setups make installation quick and easy.

Every unit includes a 1-foot RS485 communication cable and a parallel cable set. For every six units purchased, a RS485 USB battery communication cable is also included (shipped separately).

Features & Benefits

  • Tier One A+ Lithium Cells – Premium quality for extended reliability

  • 99% Operational Efficiency – Exceptional energy output with minimal loss

  • Long Lifespan – 7,000 cycles at 80% DoD; 10–20-year design life

  • Flexible Installation Options – Modular design with versatile racking compatibility

  • Eco-Friendly – 100% lead-free and recyclable LiFePO4 chemistry

  • Built-in Smart BMS – Intelligent control for voltage, current, temperature & battery health

  • Expandable System – Easily scale your battery bank without performance compromise

  • Inverter-Ready – Closed-loop communication with EG4 & Victron systems

Key Specifications

  • Nominal Voltage: 12.8V

  • Capacity: 400Ah

  • Energy Storage: 5.12kWh

  • Internal BMS Rating: 200A

  • Dimensions (L×W×H): 19 in × 6.1 in × 20.2 in (48.2 cm × 15.5 cm × 51.3 cm)

  • Weight: 98.1 lbs (44.5 kg)

  • Design Life: 7,000 Cycles @ 80% Depth of Discharge

  • Communication Ports: RS485, Plug-and-Play Interface

  • Display: Integrated LCD Monitoring Screen

The EG4 LL 12V 400AH Lithium Iron Phosphate Battery is the perfect choice for solar energy storage, off-grid systems, and backup power applications. It combines top-tier performance, extended life, and seamless integration into modern energy systems. Power your future with confidence—choose the EG4 LL 12V 400AH Lithium Iron Phosphate Battery today.
//www.portlandiaelectric.supply/cdn/shopifycloud/storefront/assets/no-image-2048-a2addb12.gif

Prepare for Anything

From hurricanes to blackouts, reliable solar power ensures you're able to keep your home & family safe no matter what comes your way.

//www.portlandiaelectric.supply/cdn/shopifycloud/storefront/assets/no-image-2048-a2addb12.gif

Solar Power Made Easy

Making one-click solar solutions simple since 2018. Whether you’re powering a cabin, charging devices, or backing up your home.

//www.portlandiaelectric.supply/cdn/shopifycloud/storefront/assets/no-image-2048-a2addb12.gif

Secure Your Independence

Say goodbye to reliance on the energy companies. Enjoy the same freedom that 50,000+ customers have with their own solar power system.

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.

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

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.

Get a Complimentary Solar Proposal Today!

$150 Value - Free Offer (Limited Time Only!) No Strings Attached. Totally Free. Takes Less than 2 Minutes.

Start Now
Customers rate us 4.3/5 based on 4 reviews.