4.02kWh 12.8V 314Ah LiFePO4 Battery For Long Duration Backup Power

4.02kWh 12.8V 314Ah LiFePO4 Battery for Long Duration Backup Power

A 4kWh-Class Battery for Longer Low-Voltage Backup Plans

This 12.8V 314Ah LiFePO4 battery has a listed nominal energy of 4019Wh, commonly expressed as approximately 4.02kWh. It is designed for compatible backup, solar-storage, inverter and UPS projects that require a larger energy reserve within a 12V-class battery system.

Compared with a 100Ah, 200Ah or 280Ah battery at the same nominal voltage, the 314Ah configuration provides a higher stored-energy capacity. This can support a longer operating target when the load and system settings remain comparable.

Build the Backup Plan in Three Layers

Stored Energy Is Not the Same as AC Output

The 4.02kWh value describes nominal stored DC energy. The inverter determines maximum AC output power, while usable energy is influenced by inverter conversion losses, battery settings, temperature and cable resistance.

A large-capacity battery connected to an undersized inverter cannot run loads beyond the inverter rating. Similarly, a high-power inverter may demand more current than the battery can supply continuously.

Battery Placement and Handling

The product measures 523 × 269 × 218mm and weighs 27.2kg net. The supporting surface should remain stable and provide access for cable connection and inspection.

The package measures 543 × 289 × 268mm and weighs 28.7kg gross. These values are useful for transport cartons, pallet loading and site handling preparation.

The IP65 enclosure supports protected technical installations, but the battery must not be immersed and all external electrical connections require appropriate protection.

4.02kWh Battery Specifications

4kWh-Class Battery FAQ

Why is the exact energy 4019Wh?

The listed specification uses 4019Wh as the nominal energy value, commonly rounded to approximately 4.02kWh.

Will it run an entire backup system?

That depends on the load schedule, inverter rating and required runtime.

Can it be stored for several months?

The specification lists six months of storage at 25°C under the stated storage conditions.

Is an inverter included?

No. The battery, inverter, charger and external DC protection are separate components.

How should longer runtime be estimated?

Use the average load, expected operating hours, inverter efficiency and configured discharge limit.

Long-Duration Backup Planning