What is the EndurEnergy ESP-5K HL 5kWh Battery Pack with BMS?

The EndurEnergy ESP-5K HL is a 5.12 kWh lithium iron phosphate (LiFePO₄) battery designed for residential and commercial solar systems. It features an integrated BMS and supports both high and low-voltage hybrid inverter configurations.

Is the EndurEnergy 5kWh battery compatible with hybrid and off-grid systems?

Yes, the EndurEnergy ESP-5K HL battery is compatible with hybrid, off-grid, and backup power systems. Its dual voltage support allows seamless integration with a wide range of inverter brands.

What type of battery chemistry does the EndurEnergy ESP-5K HL use?

This battery uses Lithium Iron Phosphate (LiFePO₄) chemistry, known for high safety, thermal stability, long cycle life, and consistent performance.

How much usable energy does the EndurEnergy 5kWh battery provide?

The battery provides 5.12 kWh of nominal energy storage, making it suitable for daily solar energy storage and backup power during grid outages.

What is the role of the built-in BMS in the EndurEnergy battery?

The integrated Battery Management System (BMS) monitors voltage, temperature, and current in real time. It provides cell balancing and protects against overvoltage, overheating, overcurrent, and short circuits.

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APsystems, Xinyi Battery, 48V/5.76kWh, UL9540 Certified, IP-65 Outdoor Enclosure,

APsystems Xinyi 48V 5.76 kWh UL9540 Certified Battery

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APsystems, Xinyi Battery, 48V/5.76kWh, UL9540 Certified, IP-65 Outdoor Enclosure,

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SKU PES-ESS-BTS-0376

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$5,148.42 USD

$ $5,148.42 USD

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SKU: PES-ESS-BTS-0376
MPN: Xinyi 5kWh Battery

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APsystems, Xinyi Battery, 48V/5.76kWh, UL9540 Certified, IP-65 Outdoor Enclosure, $5,148.42

Specifications

Voltage 48V

Capacity 5.76kWh

Product Category Battery

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.

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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.

APsystems Xinyi 48V 5.76 kWh UL9540 Certified Battery — Reliable Energy Storage for Homes and Businesses

The APsystems Xinyi 48V 5.76 kWh UL9540 Certified Battery is a compact, safe, and high-performance lithium-iron-phosphate (LiFePO₄) battery designed for modern solar energy systems. With its UL9540 safety certification and IP-65 outdoor-rated enclosure, the APsystems Xinyi 48V 5.76 kWh UL9540 Certified Battery offers long-lasting performance and flexible installation for both residential and light commercial applications.

Product Features

Certified Safety

Tested to UL9540 standards for complete system safety, including integrated BMS protection and thermal management.

Outdoor-Ready Design

The IP-65 aluminium enclosure of the APsystems Xinyi 48V 5.76 kWh UL9540 Certified Battery ensures weather-resistant, maintenance-free operation in demanding environments.

Flexible Compatibility

Compatible with hybrid and off-grid inverters, supporting 48 V DC systems and scalable parallel connections for larger storage capacities.

High Round-Trip Efficiency

Delivers up to 95 % energy retention efficiency, providing maximum energy return on each charge cycle.

Smart Battery Management System

Built-in BMS provides over-voltage, over-current, short-circuit, and temperature protection, extending battery life and ensuring system stability.

How It Works

The APsystems Xinyi 48V 5.76 kWh UL9540 Certified Battery stores excess solar energy produced during the day for later use at night or during grid outages. It integrates with solar inverters through CAN/RS485 communication, ensuring seamless control and real-time monitoring.

Specifications

Model	Xinyi 5 kWh Battery
Nominal Voltage	48 V DC
Usable Energy	5.76 kWh
Battery Chemistry	Lithium Iron Phosphate (LiFePO₄)
Rated Capacity	120 Ah
Round-Trip Efficiency	≥ 95 %
Cycle Life	> 6 000 cycles @ 80 % DoD
Enclosure Rating	IP-65 (Outdoor Rated)
Operating Temperature Range	–10 °C to +50 °C (14 °F to 122 °F)
Communication Interfaces	RS485 / CAN Bus
Certifications	UL 9540, UL 1973, UN38.3
Mounting	Wall Mount (with bracket included)
Dimensions (L × W × H)	25.6 × 17.3 × 7.9 in (650 × 440 × 200 mm)
Weight	≈ 110 lb (50 kg)
Warranty	10 Years (Limited Manufacturer Warranty)
Manufacturer	APsystems Energy Storage Solutions

Specifications verified from the official APsystems Xinyi 48V 5.76 kWh Battery Datasheet (Rev 1.2, 2023).

Specifications & Documents: Full specifications & datasheet for APsystems, Xinyi Battery, 48V/5.76kWh, UL9540 Certified, IP-65 Outdoor Enclosure,

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

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?

APsystems Xinyi 48V 5.76 kWh UL9540 Certified Battery — Reliable Energy Storage for Homes and Businesses

Product Features

Certified Safety

Tested to UL9540 standards for complete system safety, including integrated BMS protection and thermal management.

Outdoor-Ready Design

The IP-65 aluminium enclosure of the APsystems Xinyi 48V 5.76 kWh UL9540 Certified Battery ensures weather-resistant, maintenance-free operation in demanding environments.

Flexible Compatibility

Compatible with hybrid and off-grid inverters, supporting 48 V DC systems and scalable parallel connections for larger storage capacities.

High Round-Trip Efficiency

Delivers up to 95 % energy retention efficiency, providing maximum energy return on each charge cycle.

Smart Battery Management System

Built-in BMS provides over-voltage, over-current, short-circuit, and temperature protection, extending battery life and ensuring system stability.

How It Works

Specifications

Model	Xinyi 5 kWh Battery
Nominal Voltage	48 V DC
Usable Energy	5.76 kWh
Battery Chemistry	Lithium Iron Phosphate (LiFePO₄)
Rated Capacity	120 Ah
Round-Trip Efficiency	≥ 95 %
Cycle Life	> 6 000 cycles @ 80 % DoD
Enclosure Rating	IP-65 (Outdoor Rated)
Operating Temperature Range	–10 °C to +50 °C (14 °F to 122 °F)
Communication Interfaces	RS485 / CAN Bus
Certifications	UL 9540, UL 1973, UN38.3
Mounting	Wall Mount (with bracket included)
Dimensions (L × W × H)	25.6 × 17.3 × 7.9 in (650 × 440 × 200 mm)
Weight	≈ 110 lb (50 kg)
Warranty	10 Years (Limited Manufacturer Warranty)
Manufacturer	APsystems Energy Storage Solutions

Specifications verified from the official APsystems Xinyi 48V 5.76 kWh Battery Datasheet (Rev 1.2, 2023).

Specifications & Documents: Full specifications & datasheet for APsystems, Xinyi Battery, 48V/5.76kWh, UL9540 Certified, IP-65 Outdoor Enclosure,

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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.

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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!

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

Jacob B

Easy Process, Genuine Support

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Off Grid Solar Purchase

James Martin

Highly Recommend

Brian H

Solar Kit for Mobile Work Van

Keith S

Best Tech Support

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