LiFePO4 Cells • Battery Packs • DIY Kits • Energy Storage Systems
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✓ 51.2V nominal system (demo)
✓ 10kWh usable energy (demo)
✓ Wall-mounted, space-saving format
✓ Smart BMS protection options
✓ Scalable design subject to model configuration
Price: Request Bulk Price
Price:
$80.20 Original price was: $80.20.$73.20Current price is: $73.20.









High-capacity prismatic LFP cell with 1004.8Wh energy,
low internal resistance and up to 8,000-cycle performance.
EVE MB31 314Ah battery cells are available from our Poland/ CN warehouse
for USA , UK ,Canada ,Australia ,European,Arisa, Africa ,South/North Amercia countries
| ✓ | Real Grade A+ battery cell (Direct distributor for EVE battery 16 years since 2010 ) |
| ✓ | Warranty time : 5 years , any quality problem, full refund or send you free replacement |
| ✓ | Fast Delivery (3-7 days under 2000 pcs ) |
314Ah Nominal Capacity | 1004.8Wh Nominal Energy | 8,000 Cycle Life |
3.2V Nominal Voltage | 0.18mΩ Initial AC Resistance | 5.6kg Cell Weight |
The EVE MB31 is a 3.2V 314Ah prismatic LiFePO4 battery cell that delivers 1004.8Wh of nominal energy – a compact powerhouse for modern energy storage systems. Its exceptionally large capacity and ultra‑low initial internal resistance make it the go‑to choice for assembling high‑capacity battery packs in residential, commercial, and utility‑scale storage projects.
Under standard 25°C operating conditions, the MB31 supports 0.5P continuous charging and discharging (both standard and sustained duty), ensuring reliable performance with minimal heat generation. In accelerated cycle‑life tests, this cell maintains 70% state of health (SOH) after 8,000 full charge‑discharge cycles – a benchmark that significantly reduces levelised cost of storage (LCOS) and extends system lifetime.
Whether you are designing off‑grid solar storage, grid peak‑shaving, or backup power solutions, the EVE MB31 combines energy density, cycle durability, and low impedance to meet the most demanding requirements.
Delivers 1004.8Wh of nominal energy from one compact prismatic cell.
Designed for long-term energy storage use under specified 25°C cycle conditions.
Initial AC resistance of 0.18 ±0.05mΩ helps support efficient energy transfer.
Supports charging from 0°C to 60°C and discharging from -30°C to 60°C.
Space-efficient rectangular construction for customized battery modules and packs.
Local European stock is available for faster delivery to eligible EU destinations.
| ✓ Residential Solar Energy Storage Systems |
| ✓ Commercial and Industrial Energy Storage |
| ✓ Grid-Tied and Off-Grid Solar Battery Systems |
| ✓ UPS and Emergency Backup Power |
| ✓ Telecom and Remote-Site Energy Storage |
| ✓ Customized LiFePO4 Battery Packs |
| Parameter | Specification |
|---|---|
| Basic Cell Information | |
| Brand | EVE |
| Cell Model | MB31 |
| Battery Chemistry | LiFePO4 / LFP |
| Cell Construction | Prismatic Aluminum Case |
| Electrical Performance | |
| Nominal Capacity | 314Ah |
| Nominal Voltage | 3.2V |
| Nominal Energy | 1004.8Wh |
| Initial AC Internal Resistance | 0.18 ±0.05mΩ |
| End-of-Charge Voltage | 3.65V |
| End-of-Discharge Voltage | 2.5V at T > 0°C 2.0V at T ≤ 0°C |
| Charge and Discharge | |
| Standard Charging Power | 0.5P / 502.4W |
| Maximum Continuous Charging Power | 0.5P / 502.4W |
| Standard Discharging Power | 0.5P / 502.4W |
| Maximum Continuous Discharging Power | 0.5P / 502.4W |
| Cycle Life and Temperature | |
| Cycle Life at 25°C | 8,000 Cycles Under specified conditions, ending at 70% SOH |
| Recommended Operating Temperature | 10°C to 45°C |
| Charging Temperature | 0°C to 60°C |
| Discharging Temperature | -30°C to 60°C |
| Storage and Physical Data | |
| Long-Term Storage Temperature | 0°C to 35°C, within 1 year |
| Short-Term Storage Temperature | -20°C to 45°C, within 1 month |
| Self-Discharge Rate | ≤3.5% first month ≤3.0% per month afterward |
| Cell Dimensions | 173.7 × 71.7 × 207.2mm L × T × H, including terminals |
| Height Without Terminal | 204.6 ±0.5mm |
| Terminal Center Distance | 123.0 ±0.3mm |
| Cell Weight | 5.6 ±0.3kg |
| European Warehouse Availability | |
| Warehouse Location | Shenzhen,China |
| Stock Status | Ready stock, subject to confirmation |
| Delivery Coverage | USA , UK ,Canada ,Australia ,European,Arisa, Africa ,South/North Amercia …….countries |
One MB31 cell provides 1004.8Wh of nominal energy at 3.2V and 314Ah.
The specification states 8,000 cycles at 25°C under the defined test
conditions, ending when the cell reaches 70% state of health.
Yes. It is suitable for residential, commercial, industrial,
grid-tied and off-grid energy storage battery systems.
Yes. A compatible BMS is required to monitor cell voltage,
current, temperature and balancing during operation.
Yes. The battery pack structure should provide suitable cell fixation
and compression according to the EVE application requirements.
Yes. Ready stock is available from our Poland warehouse for eligible
European orders, subject to real-time inventory confirmation.
Send us your required quantity, battery pack voltage, application
and destination country to confirm Poland warehouse stock,
delivery time and quotation.
APPLICATIONS
Link each application card to its Solutions page, configuration guide or project inquiry form.

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