EVE 314Ah 3.2Volt A-Grade LiFePO4 Cell 8000 Cycles

Product Description

The 3.2V 314Ah A-Grade LiFePO4 Battery Cell – MB31 is a high-capacity prismatic Lithium Iron Phosphate cell designed for professional battery-pack assembly, solar energy storage, inverter systems, EV applications, UPS systems and commercial energy storage.

With a 314Ah nominal capacity, 3.2V nominal voltage, 0.19mΩ internal resistance and an 8000-cycle life specification, this cell is designed for applications requiring high energy capacity and long-term repeated cycling.

Its large-format design and high capacity make it an excellent choice for building 24V, 48V/51.2V and other custom LiFePO4 battery systems.

Product Overview

The MB31 314Ah LiFePO4 Cell is an A-Grade prismatic battery cell designed for high-capacity lithium battery construction.

Each cell provides approximately 1004.8Wh of nominal energy, allowing battery manufacturers to build large energy-storage systems with a relatively low number of cells.

With its 0.19mΩ internal resistance and 8000-cycle specification, the cell is suitable for long-term applications including solar storage, inverter backup, EV battery systems and commercial energy storage.

Key Features

MB31 314Ah LiFePO4 Cell

A-Grade Cell

3.2V Nominal Voltage

314Ah High Capacity

Approx. 1004.8Wh Nominal Energy

8000 Cycle Life

0.19mΩ Internal Resistance

Large-Format Prismatic Cell

Stable LiFePO4 Chemistry

High Energy Storage Capacity

Suitable for Solar Energy Storage

Suitable for Inverter Batteries

Suitable for UPS Systems

Suitable for EV Battery Packs

Suitable for Home Backup

Suitable for Commercial Energy Storage

Suitable for Off-Grid Systems

Suitable for Custom Lithium Battery Packs

Technical Specifications

Specification Details

Model MB31

Cell Grade A Grade

Chemistry LiFePO4

Cell Type Prismatic

Nominal Voltage 3.2V

Nominal Capacity 314Ah

Nominal Energy Approx. 1004.8Wh / 1.005kWh

Internal Resistance 0.19mΩ

Cycle Life 8000 Cycles*

Cell Weight Approx. 5.6kg

Dimensions (L×W×H) 174 × 208 × 72mm

Charge Cut-Off Voltage 3.65V

Discharge Cut-Off Voltage 2.5V

Discharge Temperature -20°C to 55°C

*Actual cycle life depends on charging/discharging conditions, depth of discharge, temperature, current, BMS settings, cell balancing and operating conditions.

A-Grade 314Ah LiFePO4 Cell

The MB31 cell is specified as an A-Grade LiFePO4 cell, making it suitable for professional battery-pack assembly.

For building a multi-cell battery, proper cell matching is recommended. Cells should preferably have similar:

Voltage

Capacity

Internal resistance

State of charge

Overall condition

Proper matching helps improve cell consistency and the performance of the completed battery pack.

0.19mΩ Internal Resistance

The updated internal resistance specification for this cell is:

0.19mΩ

Low internal resistance can help reduce voltage drop and internal heat generation during battery operation.

This is particularly useful for high-capacity battery systems where the cells may be required to deliver substantial current.

Actual resistance readings can vary depending on:

Cell temperature

State of charge

Measurement equipment

Measurement method

Cell condition

8000 Cycle Life

The MB31 314Ah cell is specified with:

8000 Cycles

This makes it suitable for applications requiring frequent charging and discharging over a long operating period.

Suitable applications include:

Solar energy storage

Home backup

Inverter systems

UPS systems

Commercial energy storage

Industrial energy storage

EV battery systems

Off-grid energy storage

Actual cycle life depends on depth of discharge, charging/discharging current, temperature, charging voltage, BMS settings and overall operating conditions.

314Ah High Capacity

Each cell provides:

3.2V × 314Ah = 1004.8Wh

Therefore, one cell provides approximately:

1.005kWh Nominal Energy

The high capacity allows battery manufacturers to build large-capacity battery systems using fewer cells compared with lower-capacity LiFePO4 cells.

Battery Configuration Examples

4S – 12.8V 314Ah

Using 4 cells in series:

4 × 3.2V = 12.8V

Nominal energy:

12.8V × 314Ah = 4.02kWh

Suitable for compatible 12V-class LiFePO4 battery systems.

8S – 25.6V 314Ah

Using 8 cells in series:

8 × 3.2V = 25.6V

Nominal energy:

25.6V × 314Ah = 8.04kWh

Suitable for high-capacity 24V-class solar and inverter battery systems.

16S – 51.2V 314Ah

Using 16 cells in series:

16 × 3.2V = 51.2V

Nominal energy:

51.2V × 314Ah = 16.08kWh

Suitable for large 48V/51.2V-class energy-storage systems.

Parallel Configuration

Parallel connections can increase total battery capacity while maintaining the same nominal voltage.

Configuration Approx. Capacity

1P 314Ah

2P 628Ah

3P 942Ah

4P 1256Ah

For example:

16S2P = 51.2V 628Ah

Nominal energy:

Approx. 32.15kWh

The final configuration should be selected according to the inverter, BMS, charger, load requirements and intended application.

Suitable for 24V 314Ah Battery

Using 8 MB31 cells in series creates a:

25.6V 314Ah LiFePO4 Battery

Nominal energy:

Approx. 8.04kWh

This configuration is suitable for:

Solar systems

Hybrid inverters

Home backup

UPS systems

Off-grid systems

Commercial backup applications

Suitable for 51.2V 314Ah Battery

Using 16 cells in series creates:

51.2V 314Ah

with approximately:

16.08kWh Nominal Energy

This configuration is suitable for large solar, inverter and energy-storage applications.

Dimensions & Installation

The cell dimensions are approximately:

174 × 208 × 72mm

The large-format construction should be considered when designing a battery enclosure.

Adequate space should be provided for:

Cell terminals

Busbars

Insulation

BMS wiring

Cell supports

Battery cables

Mechanical compression/support

Always verify the physical dimensions before manufacturing a custom battery box.

Cell Weight

Each cell weighs approximately:

5.6kg

A complete battery will weigh more depending on the number of cells and additional components such as:

BMS

Busbars

Cables

Terminals

Fuse/breaker

Enclosure

Cell supports

Charging & Discharge Voltage

Maximum Charge / Cut-Off Voltage

3.65V per cell

Discharge Cut-Off Voltage

2.5V per cell

The battery charger and BMS should be correctly configured for LiFePO4 chemistry.

Operating Temperature

The provided specification indicates a discharge temperature range of:

-20°C to 55°C

For best performance and service life, the battery should be operated within suitable temperature conditions.

High-current applications should also have appropriate thermal management and installation conditions.

Suitable Applications

☀️ Solar Energy Storage

Ideal for building high-capacity LiFePO4 batteries for storing solar energy and using it during nighttime or periods of low solar generation.

⚡ Inverter Batteries

Suitable for compatible 24V and 48V/51.2V inverter battery systems.

🏠 Home Backup

The 314Ah capacity provides substantial energy storage for residential backup applications.

🏢 Commercial Energy Storage

Suitable for commercial and industrial applications requiring high capacity and long cycle life.

🚗 EV Applications

Can be used for compatible electric vehicles and high-capacity EV battery packs when the complete system is properly designed.

🔋 UPS Systems

Suitable for compatible high-capacity LiFePO4 UPS and backup-power systems.

🌐 Off-Grid Systems

Suitable for off-grid solar and renewable-energy storage applications.

Why Choose MB31 314Ah A-Grade Cell?

The MB31 314Ah cell offers:

314Ah High Capacity

3.2V Nominal Voltage

A-Grade Cell Quality

0.19mΩ Internal Resistance

8000 Cycle Specification

Approx. 1.005kWh Energy per Cell

Large-Format Prismatic Construction

-20°C to 55°C Discharge Temperature Range

It is a strong option for building high-capacity, long-life LiFePO4 battery systems for solar, inverter, EV, UPS, home backup and commercial energy storage.

Recommended Battery Assembly

For professional battery-pack construction:

Use cells of the same model and capacity.

Preferably use cells from the same batch.

Match cell voltage before assembly.

Check internal resistance.

Properly balance cells.

Use a suitable LiFePO4 BMS.

Use correctly rated busbars.

Use appropriately sized DC cables.

Provide proper insulation.

Use suitable fuse/breaker protection.

Provide proper mechanical cell support.

Configure the BMS according to LiFePO4 requirements.

Test the completed battery before commissioning.

Package Includes

1 × MB31 3.2V 314Ah A-Grade LiFePO4 Prismatic Cell

Not Included

BMS

Busbars

Battery Box

Charger

Cables

Cell Supports

Fuse/Breaker

Battery Assembly

Important Note

The specifications above are based on the provided product image and your updated specification, including A-Grade cell quality, 314Ah capacity, 0.19mΩ internal resistance and 8000-cycle specification.

Actual cycle life and performance depend on charging voltage, discharge depth, current, temperature, BMS settings, cell balancing and overall battery-pack design.

For professional battery assembly, use properly matched cells and a correctly rated LiFePO4 BMS, busbars, cables, terminals and protection system.