REGO 12V 400Ah Lithium Iron Phosphate Battery -
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REGO 12V 400Ah Lithium Iron Phosphate Battery w/ Renogy ONE

by Renogy
Current price $3,500
Original price $4,375
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Original price $4,375
from $3,500
Current price $3,500
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Friendly Phone Support:  877-242-2792

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Estimated Delivery Time: 5-7 Days | Order Today

30-Day Returns | Fast Shipping | 40,000+ Customers

Time to meet the latest Renogy REGO 12V 400A Lithium Iron Phosphate Battery,5.12kWh massive capacity able for expansion, providing more power than ever before. Manufactured with top-grade cells, the battery provides an exceptional lifespan of more than 3800 cycles. Extruded aluminum housing offers distinctive combinations of mechanical properties, higher strength, lower density, and better heat conductivity.

The lids that use die casting technology have a much higher tolerance for extreme temperatures and better electrical properties and are more durable and stable compared to plastic parts. Advanced battery management system (BMS) provides unprecedented over 60 types of full protections in the market, ensures ultra-reliability and safety, and leads smart batteries to the next era. With built-in intelligent self-heating, keep the stable charging performance of the battery in cold environments effortlessly. Upgrade your off-grid adventures with this powerful and smart battery.

Save Over 30% Installation Footprint, More Powerful than Ever

Replacing four pieces of 12V 100A lithium batteries with one REGO 12V 400A lithium battery, not only provides you 5.12kWh massive storage capacity but will also save you more than 30% of the installation footprint.

Extremely Simplified Connection, Expandable Capacity

The REGO battery has integrated parallel cables, simplifies the wiring process, and allows you to use the easiest plug-and-play way to connect with the REGO battery hub box for system expansion. Up to 8 batteries can be connected in parallel, offering a total capacity of up to 40KWh.

*Please kindly noted that the battery hub box needs to be purchased separately. One hub box can connect up to 3 batteries.

What's Included With Your Order?

  • 1 x 12V 400Ah REGO Lithium Iron Phosphate Battery 12V 400Ah REGO Lithium Iron Phosphate Battery 
  • 1 x Cable (optional) 
  • Free Shipping
  • Lifetime Customer Support (Email, Live Chat & Phone)



  • Battery Type: Lithium Iron Phosphate
  • Rated Capacity: 400Ah
  • Nominal Voltage: 12.8V
  • Energy: 5120Wh
  • Cycle Life(0.5C,25℃): 3800 Cycles at 80% DOD
  • Connection Method: Parallel (Up to 8)
  • Automatically Self-heating Function: No


  • Dimensions: 18.0 x 13.0 x 10.5 inch (457 x 329 x 267.2 mm)
  • Weight: 112.4 lbs. (51 kg)
  • Protection Rate: IP65
  • Housing Material: Die Cast Aluminum/Extruded Aluminum


  • Charge Voltage: 14.4V
  • Maximum Charge Current: 300A
  • Charge Cut-off Voltage: 14.4V


  • Maximum Continuous Discharging Current: 350A
  • Discharge Cut-off Voltage: 10V


  • Standard Operation Temperature: Recommended: 59~86 ℉ / 15~30℃
  • Storage Temperature: Less Than 1 Week: -22°F~140°F (-30°C~60°C) Less Than 6 Months: -4°F~113°F (-20°C~45°C)
  • Charge Temperature: 32~131℉ / 0~55℃
  • Discharge Temperature: -4~131℉ / -20~55℃


  • Built-in Bluetooth: Yes
  • Communication Port: No


  • Material and workmanship warranty: 5 Year


  • MSDS, UN38.3, FCC: Yes


  • Length: 1FT
  • Gauge(Wire Size): 4/0 AWG
  • Terminal Size: 3/8in
  • Max Current: 405A
  • Rating Voltage: 600v
  • Temperature: -40℃-150℃/-40℉-221℉

Still Have Questions? Give us a call today 1-877-242-2792

What is the Shop Solar Kits returns policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer must pay for the return shipping costs. See our complete return policy on our Shipping, Deliver, and Returns page.

What’s covered by the Shop Solar Kits returns policy?

Our returns policy covers all purchases made through Shop Solar Kits. 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 Shop Solar Kits order?

All orders are processed within 72 hours and you can expect delivery within 5 to 10 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 the financing and payment options at Shop Solar Kits?

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, see our Financing page for more details

How does the Shop Solar Kits Lifetime Support work?

Our legendary lifetime customer support has helped make us the #1 solar kit 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 Shop Solar Kits equipment, we’ve got you covered: we’re always only a phone call or email away.

Top Solar Company in the USA

Top Solar Company in the USA

The prestigious ranking by Consumer Affairs is based on comprehensive evaluations, including ratings and reviews, equipment options, support services, pricing transparency, warranties, and various other factors. Among the top 6 nominated companies, Shop Solar stands out with the highest review rating, reaffirming its dedication to customer satisfaction and product quality.

Best Components, Lowest Prices

Best Components, Lowest Prices

We cut out the bloat of traditional solar companies and pass those savings off to you. Plus, we provide free shipping on all solar kits and lifetime customer service on everything we sell.

Expert Guidance

Expert Guidance

Our team of solar professionals is here 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.


We’re people just like you

We’re not corporate and neither are our customers. We’re just a group of 50+ solar enthusiasts who are passionate about providing an honest, no-BS way for anyone, anywhere to improve their lives and the world around them with solar power.

Trusted Solar Authority

Trusted Solar Authority

With over 40,000+ happy customers, 2,500+ positive reviews, and decades of experience in the industry, we’re proud to say we’re America’s #1 solar power solutions provider. You can trust us to provide you with top-notch products and legendary customer service at every step of the way.