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EndurEnergy | HL-LiFePO4 48v Lithium Battery | 100AH | Server Rack Battery | UL1973, UL9540, UL9540A, CEC,SGIP

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When you invest in a solar kit, you want to have peace of mind knowing that you have all the support you need to ensure that it’s always working properly.

At Solar Sovereign, providing legendary customer support is at our core, so we provide all of our customers with lifetime support.

This means that anytime you have a question, concern or are troubleshooting - you’ll have timely access to solar (and human) experts that can help you.

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Frequently Asked Questions

What countries do you ship to?

We currently ship to the United States, To enquire about shipping to a different destination, please contact us.

How long will it take to receive my order?

Standard freight shipping normally takes 5-7 business days.

For remote locations 7-15 business days.

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We usually use, FedEx Freight, RL Carriers, ABF Freight, Estes, Southeastern Freight Lines, and many more!

We're happy to accommodate special carrier requests

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Items must be returned within 30 days after receiving your order. Items must be returned in the same condition in which they were received, be unworn/unused, have any tags still attached, and include all the original packaging.

Please see individual product page for more specific details, returns vary for each product.

How long will it take to receive my refund?

Refunds are processed within 7 days from when we receive the item(s).

Where do the products ship from?

Most of our products ship from the Dallas Fort-Worth area. If you'd like to know the specific location a product will ship from, please don't hesitate to ask. We're here to provide you with all the information you need!

Where are you guys based out of?

We are based out of Dallas Texas!

Endur | HL-LiFePO4 48v Lithium Battery | 100AH | Server Rack Battery | UL1973, UL9540, UL9540A, CEC,SGIP

EndurEnergy | HL-LiFePO4 48v Lithium Battery | 100AH | Server Rack Battery | UL1973, UL9540, UL9540A, CEC,SGIP


Endur | HL-LiFePO4 48v Lithium Battery | 100AH | Server Rack Battery | UL1973, UL9540, UL9540A, CEC, SGIP

Elevate your data center's power reliability with the Endur HL-LiFePO4 48v Lithium Battery. Engineered for unmatched performance, this cutting-edge battery ensures uninterrupted power supply, fortifying your critical systems against potential disruptions.

Key Specifications:

The Endur HL-LiFePO4 48v Lithium Battery is purpose-built to exceed industry standards, providing unmatched reliability for your critical infrastructure. With a robust capacity of 100AH and a high depth of discharge, this battery ensures prolonged power supply when you need it most. Additionally, it operates efficiently across a wide range of temperatures, making it a versatile choice for various environments.

Invest in the Endur HL-LiFePO4 48v Lithium Battery today to fortify your server rack with the ultimate power solution. With certifications including UL1973 certified and pending UL9540, UL9540A, CEC, and SGIP, you can trust in the reliability and performance of Endur's advanced battery technology.


Link To Specifications Download

Specifications Details
Model ESP-5K HL
Nominal Voltage 51.2 V
Working Voltage 48 V - 57.6 V
Nominal Battery Energy 5 kWh
Peak Power 5 kW (3 seconds)
Max. Continuous Discharge Rate 3 kW
Max. Continuous Charge Rate 3 kW
Max. Battery Bank Size 80 kWh per string (16 packs per string)
Max. Battery System Capacity 640 kWh per system (8 strings with 16 packs each)
Recommended C rate 0.5 C
Max. Charge & Discharge Current 60 A
Round Trip Efficiency 97%
Recommended Depth of Discharge (DoD) 90%
Charge Temperature Range 32 °F to 122 °F (0 °C to 50 °C)
Discharge Temperature Range 14 °F to 131°F (-10 °C to 55 °C)
Life Cycles 6000
Protection Level IP20
Size (L x W x H) 17.40 x 19.70 x 5.24 in (442 x 500 x 133 mm)
Weight 101.413 lb (46.00 kg)
Battery Type Lithium Iron Phosphate (LFP)
Warranty 10-Year
Compliance UL1973 certified. UL9540, UL9540A, CEC and SGIP pending


Warranty Information:

Endur Electronics is committed to providing reliable and high-quality products. We stand behind the craftsmanship and performance of our EMP hardened lithium batteries. As such, we offer a comprehensive 10-year limited warranty on all our lithium batteries.

This warranty covers any defects in materials or workmanship under normal use during the warranty period. If a product is found to be defective, we will repair or replace it at no cost to you.

This warranty does not cover:

For any warranty inquiries or claims, please contact our customer service team at or (469) 405-4423


Order Confirmation:

As soon as you place your order, you will receive an order confirmation email.  This means that we have received your order in our system and pre-authorized your credit card for the purchase.  As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and available for immediate shipment.  If your item is on backorder or unavailable, we will void the pre-authorization and reach out to you via e-mail.  If your item(s) are available for immediate shipment (within 5 business days), we will process the charges and submit the order for shipment.

Order Shipment:

If your order is in stock and we process the charges to your credit card, it will ship within five business days from the date of your order.  We will send you tracking information within 24 hours of your order leaving the warehouse to the e-mail address you provided when checking out.  If you do not receive tracking information from us within six business days of your order, feel free to follow up with us at

No Shipping outside the USA. 

Shipping Options

Our base "Curb-side" Pickup shipping is usually completely free! This option usually takes between 5-15 days to arrive at your doorstep, after you have submitted your order. There are other options available, however. We also offer the below options for some products. Please contact us for more information about these prior to ordering. 



Specifications Download
Manual Download


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