Factory 20kw 51.2V Lifepo4 Batteries 48V 400ah Lithium Iron Battery LFP Powerwall Home Solar Energy Storage System

​​Industrial-Grade Power for Residential Demands: Sunpok 51.2V 400Ah Battery​​

Deploy resilient energy storage with the ​​Sunpok 51.2V 400Ah Vertical Lithium Iron Phosphate (LiFePO4) Battery​​. Designed for homeowners requiring heavy-duty capacity and operational stability, this unit delivers ​​20.48kWh of usable energy​​ to sustain extended backup cycles or maximize renewable self-sufficiency.

​​Engineered for Sustained Performance​​

• ​​High-Cycle Capability:​​ LiFePO4 chemistry supports repeated deep discharges without significant degradation

• ​​Voltage Stability:​​ 51.2V nominal voltage maintains efficiency during extended high-load operation

• ​​Integrated Safeguards:​​ Multi-layer BMS protection (over-current, temperature, cell imbalance) ensures operational integrity

• ​​Minimal Voltage Sag:​​ Optimized discharge curve supports critical appliances under load

​​Space-Optimized Robust Design​​

The vertical, self-supporting structure (IP21 rating) combines structural rigidity with space efficiency. Suitable for garages, utility rooms, or basements where floor space optimization matters. No specialized mounting required beyond level placement.

​​Core Applications:​​

• ​​Extended Outage Resilience:​​ Power refrigerators, lighting, communications for 24+ hours

• ​​Peak Load Management:​​ Shift high-consumption appliances off-grid during tariff spikes

• ​​Solar Storage Foundation:​​ Capture surplus daytime generation for nighttime usage

• ​​High-Demand Household Support:​​ Supplement power for workshops, EV charging, or HVAC systems

​​Technical Parameters:​​

│ Voltage │ 51.2V (nominal) │

│ Capacity │ 400Ah (LFP chemistry) │

│ Usable Energy │ 20.48kWh │

│ Dimensions │ Vertical footprint optimized│

│ Protections │ BMS + IP21 environmental │

​​Access Product Documentation:​​

Complete technical specifications, discharge curves, and compatibility guidelines are available at ​​sunpok.com​​.

​​Sunpok 51.2V 400Ah: Delivering uncompromised capacity for residential energy autonomy.​

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48V Energy Storage Lithium Battery Parameters
 

About Sunpok Energy

Guangzhou Sunpok Energy Co., ltd. is a high-tech enterprise integrating battery research and development, design, and production. It was registered in Guangzhou, China in 2016.

After years of development, sunpok energy has become a leader in China's energy storage industry, vertically integrated upstream and downstream supply chain resources, continuously optimized the company's product matrix, improved product performance, and won praise from customers at home and abroad.

The products of sunpok energy have been sold all over the world, bringing green energy to more than 12,000 families and units. At present, the products of sunpok energy mainly include:

1. Energy Storage Lithium Battery
2. 48V Lithium Ion Battery
3. Lithium Portable Power Station
4. All In One ESS
5. Complete Off Grid Solar System
6. Hybrid Solar System Kit
7. Wind Solar Hybrid Power System
8. Off Grid Inverter
9. Deep Cycle Lithium Battery
10. 12V Gel Battery
11. Mono PV Panels
12. Residential Wind Turbine
Mutual benefit and win-win results have always been the tenet of Sunpok Energy. In the future, sunpok energy will work with partners to scale new heights with a more inclusive attitude.


48V Energy Storage Lithium Battery Product Display
The production of energy storage lithium batteries is operated by professional workers with more than 5 years of experience.

Use the world's leading testing equipment to carry out comprehensive testing of batteries.

Strong R & D and production capacity of energy storage lithium battery, can provide OEM/ODM service for partners all over the world.

Customers visiting the factory

48V Energy Storage Lithium Battery Project Display

FAQ
Question 1: Are you a factory or a trader?
Answer 1: We are a manufacturer of batteries, and can also provide solutions for the entire solar system.
Question 2: What is the lead time?
Answer 2: We can deliver within 3-15 days.
Question 3: What is the warranty period, and how many years?
Answer 3: The warranty period for batteries is 5-10 years.
Question 4: How is your technical support?
Answer 4: We provide lifetime online support through Whatsapp/ Skype/ Wechat/ Email. Any problem after delivery, we will offer you a video call anytime, our engineer will also go to overseas help our customers if necessary.
Question 5: How to become your agent?
Answer 5: Contact us through the website, email, or phone, and we can talk about details to confirm.
Question 6: Is the sample available and free?
Answer 6: The sample will be charged a cost, but the cost will be refunded after the bulk order.
Question 7: Do you support OEM/ODM?
Answer 7: Of course, we can do customized services for our partners.
If you have other questions, please add the contact information of our sales manager to understand, thank you!