Description
EVE MB31 314AH 3.2v LFP Automotive Grade
Minimum Order Qty is 8 cells – No setup support is provided with the purchase of wholesale cells.
SHIPPING – see more below
The next generation EVE Energy MB31 prismatic LiFePO₄ (LFP) cell delivers a nominal capacity of 314 Ah at 3.2 V, storing approximately 1,000 Wh per cell. Built for endurance, it boasts an impressive cycle life of up to 8,000 cycles, making it a reliable candidate for systems expecting a long operational lifespan
These cells feature very low internal resistance (≤0.18 mΩ), supporting efficient high-current charging and discharging with minimal energy loss
With a 0.5 C continuous rating (~157 A) and 1 C (Burst) short duration 30s, they’re well-suited for demanding applications
Robust design elements include operating temperature ranges from –30 °C to 60 °C (discharge) and 0 °C to 60 °C (charge), and they come with safety certifications such as MSDS, UN38.3, CE
This newly released in 2024 next generation EVE 314ah 3.2v Prismatic LFP cell, has been verified by EVE Laboratory to be able to reach 8,000 cycles, this is due to novel manufacturing technology, the secret sauce of LFP chemistry has gone through multiple iterations, the quality of the Cathode and Anode materials has been improved, and it is now expected that under the right conditions, these cells can reach a lifetime of up to 20 years in perfect conditions
MB31 – EVE 314Ah Cells 3.2V 8000 Cycles
- Model Name： MB31
- Nominal Capacity： 314Ah
- Nominal Voltage： 3.2V
- Standard Charge/ Discharge: 0.5C / 0.5C
- Cycle Life： 8000 Cycles
- Energy Density: 178wh/kg
- MSDS, IEC 62619, UN38.4
- Data Sources： EVE’s Laboratory
| Specification Parameters | |
|---|---|
| Nominal Capacity | 314Ah (330+ah) |
| Nominal Voltage | 3.2V |
| Initial IR | <0.18 mΩ (A+ Auto Grade) |
| Weight | 5600g ±300g |
| Charging Cut-off Voltage | 3.65V |
| Discharging Cut-off Voltage | 2.5 V T >0℃ 2.0 V T ≤0℃ |
| Discharging Temperature | – 30~60℃ |
| Storage Temperature | 0~35℃ |
| Model Name | MB31 |
| Cycle Life | 8000 |
| Standard Charging Power | 0.5P |
| Standard Discharging Power | 0.5P |
| Height(H) with terminal | 207.2 mm ±0.5 mm |
| Height(h) without terminal | 204.6 mm ±0.5 mm |
| Length | 173.7 mm ±0.5 mm |
| Thickness | 71.7 mm ±0.8 mm |
The MB31 cell is the most popular cell in Australia for DIY battery building. Its part of the ESS Energy Storage range, specifically made for lower C rate and longer lifespan
SHIPPING IS CALCULATED IN CHECKOUT
ADDITIONAL COST FOR WA, NT , TAS and REMOTE AREAS – CALL OR ENQUIRE TO CONFIRM
Some locations will require collection from a nearby depot.
Warranty coverage is conditional and will only be considered if strict requirements are met. This includes full documentation of your project specifications, operating currents, and temperature profiles. In the past five years, every warranty claim has been due to thermal extremes (too hot or too cold), excessive current, incorrect programming, Low or High Voltage or installation error. Everyone of those issues is not a manufacturing defect, its a user controllable issue.
Every A+ Grade Automotive cell will last at least for the warranty period in 99.99% of cases, if the DIY user controls the battery correctly.
While hardware failure is theoretically possible, it has never been the root cause in any case we’ve encountered. Battery cell warranty is not automatically granted and will likely be declined outside the initial replacement period unless you can irrefutably prove the failure was caused by a manufacturing defect and not by operating conditions or misuse. Why? Because these are batteries. They require proper thermal management and must remain within specified temperature ranges at all times. Without precise and verifiable data, we cannot and will not assume liability.
While ~99% of our customers experience zero issues, the minority who submit claims have all—without exception—been at fault in their system design or use.
