Voltpro Energy 12V 314Ah LiFePO4 Battery | EVE A-Grade 8000+ Cycle Cells

Product Description

The Voltpro Energy 12V 314Ah LiFePO4 Battery is a high-capacity lithium energy storage solution designed for solar systems, inverter backup, UPS systems, off-grid applications and demanding DC power requirements. It is built with EVE A-Grade LiFePO4 cells featuring an exceptionally low 0.17 IR and a rated cycle life of up to 8000+ cycles under suitable operating conditions.

The battery is equipped with a JK Smart B2A8S20P BMS, offering 200A continuous current capability, up to 350A peak discharge and 2A active cell balancing. A JK 3.2-inch LCD Display provides convenient access to important battery information, while robust 200A terminals provide reliable high-current connections.

Product Overview

The Voltpro Energy 12V 314Ah LiFePO4 Battery is designed for users who require high energy capacity, long cycle life and intelligent battery management in a 12V battery system.

With a nominal voltage of 12.8V and a capacity of 314Ah, the battery provides approximately 4.02kWh of nominal energy storage. This makes it suitable for extended backup requirements and larger residential, commercial and off-grid applications.

The combination of EVE A-Grade cells and JK Smart BMS technology provides a high-performance battery platform capable of supporting demanding loads when correctly installed and configured.

Key Features

12.8V Nominal Voltage

314Ah High Capacity

Approx. 4.02kWh Nominal Energy

EVE A-Grade LiFePO4 Cells

0.17 IR Cell Resistance

8000+ Cycle Life

JK Smart B2A8S20P BMS

200A Continuous Current

350A Peak Discharge

2A Active Cell Balancing

JK 3.2-Inch LCD Display

200A High-Current Battery Terminals

Intelligent Battery Monitoring

Advanced Cell Protection

Suitable for Solar & Inverter Systems

Suitable for Backup & Off-Grid Applications

Designed for Long-Term Energy Storage

Technical Specifications

Specification Details

Product Type LiFePO4 Lithium Battery

Nominal Voltage 12.8V

Battery Capacity 314Ah

Nominal Energy Approx. 4.02kWh

Battery Chemistry LiFePO4

Cell Brand EVE

Cell Grade A Grade

Cell IR Approx. 0.17 mΩ*

Cycle Life Up to 8000+ Cycles*

BMS Brand JK Smart BMS

BMS Model B2A8S20P

Continuous Current Up to 200A

Peak Discharge Current Up to 350A

Active Balancing 2A

LCD Display JK 3.2-Inch LCD

Main Terminals 200A

Battery Configuration 4S LiFePO4

Recommended Use Solar, Inverter, UPS, Backup & Off-Grid

*Cell resistance and cycle-life figures are dependent on cell test conditions, temperature, discharge rate, depth of discharge and other operating parameters.

EVE A-Grade LiFePO4 Cells

The battery is built using EVE A-Grade LiFePO4 cells selected for high-quality energy storage applications.

The cells feature an extremely low stated 0.17 IR, indicating low internal resistance under the applicable measurement conditions. Lower internal resistance can contribute to improved current delivery and reduced internal losses.

The cells are specified for 8000+ cycles, making this battery suitable for applications requiring frequent charging and discharging over an extended service period.

Cell Advantages

EVE A-Grade Cell Quality

Low Internal Resistance

High Energy Density

Stable LiFePO4 Chemistry

Long Cycle Life

Suitable for Deep-Cycle Applications

Excellent for Solar Energy Storage

JK Smart BMS – B2A8S20P

The battery uses a JK Smart B2A8S20P BMS, providing intelligent monitoring and protection for the battery pack.

The BMS supports up to 200A continuous current and up to 350A peak discharge, making it suitable for high-power applications when the complete battery system—including cells, cables, terminals and inverter—is appropriately designed.

BMS Specifications

Model: JK B2A8S20P

Continuous Current: 200A

Peak Discharge: 350A

Active Balancing: 2A

Cell Voltage Monitoring

Overcharge Protection

Over-Discharge Protection

Over-Current Protection

Short-Circuit Protection

Temperature Monitoring

Active Cell Balancing

2A Active Balancing

The JK Smart BMS provides 2A active balancing.

Active balancing helps redistribute energy between cells rather than simply dissipating excess energy as heat. This helps maintain better cell voltage consistency, particularly during charging and high-state-of-charge operation.

For a high-capacity battery such as this 314Ah pack, active balancing can be particularly useful in maintaining cell consistency over repeated cycles.

JK 3.2-Inch LCD Display

A JK 3.2-inch LCD Display is included for convenient battery monitoring.

The display can provide important battery information depending on the connected JK BMS configuration, such as:

Battery Voltage

Battery Current

Battery State of Charge

Individual Cell Voltages

Charging Status

Discharging Status

Cell Balance Information

Battery Temperature

BMS Status and Protection Information

This allows users to monitor the battery without relying entirely on a mobile application.

200A High-Current Terminals

The battery is equipped with 200A-rated terminals designed for high-current battery connections.

Properly sized terminals and cables are important for high-power applications because they help provide secure electrical connections and reduce connection resistance.

For installations approaching the battery's higher current capabilities, appropriate cable sizing, fusing and connection hardware should always be used.

Battery Energy Capacity

The battery provides:

12.8V × 314Ah ≈ 4,019Wh

So the battery has approximately 4.02kWh of nominal stored energy.

Actual usable energy depends on discharge depth, BMS settings, inverter efficiency, load characteristics, temperature and battery condition.

Approximate Backup Examples

The following are approximate theoretical runtime calculations based on the battery's nominal 4.02kWh energy capacity. Actual backup will be lower depending on inverter efficiency and usable battery capacity.

Load Approx. Theoretical Backup

100W ~40 Hours

250W ~16 Hours

500W ~8 Hours

750W ~5.3 Hours

1000W ~4 Hours

1500W ~2.7 Hours

2000W ~2 Hours

2500W ~1.6 Hours

3000W ~1.34 Hours

Note: Actual backup time varies according to inverter efficiency, battery usable capacity, load power factor, temperature and BMS limits.

What Can It Run?

Depending on the inverter and total load, this battery can be used for a wide range of household and commercial backup requirements.

Typical Applications

LED Lights

Ceiling Fans

LED TV

Wi-Fi Router

CCTV System

Computers

Laptops

Refrigerators

Deep Freezers

Internet & Networking Equipment

Solar Inverters

UPS Systems

DC Appliances

Emergency Backup Systems

Off-Grid Solar Systems

For appliances with motors or compressors, such as refrigerators and pumps, the inverter must be capable of handling the appliance's startup/surge current.

Recommended Applications

Solar Energy Storage

Ideal for storing solar energy during the day and using it during nighttime or periods of low solar generation.

Home Backup

The approximately 4.02kWh capacity makes it suitable for essential household backup loads.

Inverter Systems

Can be integrated with a suitable 12V-compatible inverter.

Off-Grid Systems

Suitable for remote locations and off-grid solar installations where reliable energy storage is required.

UPS & Emergency Backup

Can provide extended backup for compatible UPS systems and critical equipment.

Important Installation Note

Use a LiFePO4-compatible charger or inverter/charger with appropriate charging parameters for a 4S LiFePO4 battery. For high-current applications, cable size, fuses/breakers, connectors and inverter ratings should be selected according to the actual load and installation requirements.