1/4
The Light Weight
3X
Run Time
5X
Charges Up To 5x Faster
0
Maintenance
100%
Safe & Reliable
20kwh Server Rack Lifepo4 Battery DL-LFP-BE51100
This 20kWh lithium battery includes four 5kWh modules. They are mounted on a sturdy metal frame and connected in parallel to deliver 20kWh of energy. The rack-mounted design saves space while improving heat dissipation and maintenance.
It weighs 182kg and measures 482/438×420×708mm. Server rooms, base stations, and data centers rely on it as a reliable backup power source.
| Model | 20.48kwh (BE51100 Series) |
|---|---|
| Nominal Voltage | 51.2V |
| Nominal Capacity | 400Ah |
| Weight | 180±0.5Kg |
| Dimensions (L*W*H) | 482/438*420*708mm |
| Discharging Cut-off Voltage | 44.8V±0.2V |
| Charging Cut-off Voltage | 57.6V±0.2V |
| Charging Current | Max./280A* |
| Discharging Current | Max./400A* |
| Cell Type | LiFePO4 Battery |
| Terminal | M8 |
| Case Material | Metal Box |
| Communication Mode | RS485 / CAN |
| Depth of Discharge | 95 |
| Working Temperature Range | 0°C~50°C Charge / -10°C~50°C Discharge |
| The Shelf Temperature | -20°C~60°C |
| Design Life | 10 Years (25°C/77°F) |
| Cycle Life | ≥6500 Cycles |
* This is the theoretical current value after batteries are connected in series. There will be a certain error due to external wire length and other factors.
User Manual – 5Kwh~25Kwh Rack Mount Series
UN38.3, MSDS, KC, CE, CB, IEC, UL, ISO, more info please contact us.


Video For 20kwh RackMounted Battery
Customize Your 20kwh Lifepo4 Battery Form Now On
– For Home / Solar / Office/ Commercial / UPS –
Delong engineers are always ready to customize renewable energy solutions for your project. Whether it’s voltage, current, capacity, interfaces, size, appearance, or features like Bluetooth and WiFi—just contact us. We focus on your needs and strive to deliver quality batteries with a satisfying user experience.
Used the 20kwh Battery Pack in Widely Application
The 20kWh LiFePO4 battery is an efficient and reliable power solution. It stores solar energy when idle and supplies power during peak hours. If you’re in an area with unstable electricity, the 20kWh battery solves your power problems.
It works as a backup power source, UPS, or emergency supply, improving energy independence for homes, businesses, offices, schools, and charging stations. It cuts your electricity bills and makes a smart long-term investment.

Why Buy 20kWh Lithium Battery From Delong Energy?
Delong’s 20kWh lithium battery is manufactured using advanced equipment and undergoes multiple strict quality checks. It offers premium quality that meets international standards like CE, KC, IEC, UL, and UN38.3. The battery bank can be shipped to different countries for sale and use.
If you want to improve your energy independence and business profits, contact us for solutions or OEM / ODM service. We also provide professional after-sales service.



































