Product Details
xMWNKDS EVE MB31 3.2V 314Ah LiFePO4 Battery Cell
Grade A Prismatic Lithium Iron Phosphate Cell | 6000+ Cycles
Perfect for Energy Storage | Ideal for Solar / EV / RV / E-Boat / Off-Grid / Backup Power
The MWNKDS EVE MB31 3.2V 314Ah LiFePO4 Battery Cell is a Grade A lithium iron phosphate prismatic cell designed for high-capacity energy storage, DIY battery pack assembly, solar power systems, electric vehicles, RVs, e-boats, off-grid systems, inverters, UPS backup power, and wind energy storage.
Built with EVE Grade A LiFePO4 technology, this cell offers 314Ah large capacity, 3.2V nominal voltage, ≤0.25mΩ low internal resistance, and 6000+ cycle life at 80% DOD, delivering stable performance, strong discharge capability, and long-term reliability for professional and DIY energy storage projects.
Key Features
314Ah High Capacity
With a nominal capacity of 314Ah / 314000mAh, this battery cell provides powerful energy storage for high-demand applications.
Approximate energy per cell:
3.2V × 314Ah = 1004.8Wh
Ideal for solar storage, home backup power, RV power systems, off-grid energy systems, electric vehicles, and inverter battery packs.
Grade A EVE LiFePO4 Cell
This cell is made with New Grade A EVE lithium iron phosphate technology, offering stable quality, high consistency, and reliable long-term performance.
The aluminum shell provides a durable prismatic structure, making the cell suitable for battery pack integration and energy storage system assembly.
6000+ Cycle Life
The MWNKDS EVE MB31 cell supports 6000+ cycles at 80% DOD under proper use conditions.
Benefits include:
Long service life
Lower replacement cost
Stable charge and discharge performance
Suitable for frequent cycling applications
Ideal for solar, off-grid, and backup power systems
Low Internal Resistance ≤0.25mΩ
The ultra-low internal resistance helps improve energy efficiency and reduce heat generation during charge and discharge.
Performance benefits:
Lower energy loss
More stable current output
Better discharge efficiency
Reduced operating heat under proper use
Suitable for high-power energy storage systems
Strong Discharge Performance
The battery cell supports both stable continuous discharge and short-term peak power output.
Performance data:
Recommended Constant Current: 157A / 0.5C
Max Continuous Discharge Current: 314A / 1C
Max Peak Discharge Current: 3C
Charging Method: CC / CV
Maximum Charging Voltage: 3.65V
Discharge Cut-off Voltage: 2.5V
This makes it suitable for EV projects, e-boats, RV systems, golf carts, power tools, inverters, UPS systems, and backup power applications.
Product Specifications
| Item | Specification |
|---|---|
| Brand | MWNKDS |
| Cell Manufacturer | EVE |
| Model | MB31 |
| Product Type | Grade A LiFePO4 Battery Cell |
| Battery Type | Lithium Iron Phosphate / LiFePO4 |
| Shell Material | Aluminum |
| Nominal Voltage | 3.2V |
| Nominal Capacity | 314Ah / 314000mAh |
| Approx. Energy | 1004.8Wh |
| Internal Resistance | ≤0.25mΩ |
| Cycle Life | 6000+ Cycles at 80% DOD |
| Combination | 4S / 8S / 12S / 16S |
| Recommended Constant Current | 157A / 0.5C |
| Max Continuous Discharge Current | 314A / 1C |
| Max Peak Discharge Current | 3C |
| Charging Method | CC / CV |
| Maximum Charging Voltage | 3.65V |
| Discharge Cut-off Voltage | 2.5V |
| Charging Temperature | 0°C to 45°C |
| Discharge Temperature | -30°C to 65°C |
| Weight | About 5.5kg |
| Size | 204 × 71 × 173mm |
| Application | Solar, EV, RV, E-Boat, Off-Grid, Inverter, UPS, Wind Energy, Backup Power |
Product Performance Advantages
High Capacity, Compact Design
With 314Ah capacity and a compact prismatic size of 204 × 71 × 173mm, this cell is suitable for space-saving battery pack designs.
Flexible Battery Pack Combination
The cell supports multiple system configurations:
4S = 12V battery system
8S = 24V battery system
12S = 36V battery system
16S = 48V battery system
A compatible BMS is required for charging, discharging, balancing, and safety protection.
Strong Output for High-Power Applications
With 314A max continuous discharge and 3C peak discharge, this cell is suitable for high-current applications such as EVs, e-boats, golf carts, power tools, inverters, UPS systems, and emergency power systems.
Package Includes
Shipping list:
MWNKDS EVE 3.2V 314Ah LiFePO4 Battery Cell × 1
Screw × 1 Set
Copper Sheet × 1 Set
Insulation Board × 1 Set
Actual accessory quantity may vary depending on the selected package option. Please check the order option before purchase.
Important Notes Before Purchase
This product is a single LiFePO4 battery cell, not a complete battery pack.
To build a safe and functional battery system, you may need:
Copper sheets / busbars
Screws
Insulation board
Battery holder or case
Fuse and protection components
Correct wiring and balancing setup
Professional installation is recommended. Incorrect wiring, short circuit, overcharge, over-discharge, reverse polarity, or use without BMS may damage the battery or create safety risks.
Payment Information
We support secure payment through Shopify checkout.
Available payment methods may include:
Credit Card
Debit Card
PayPal
Shopify Payments
Apple Pay
Google Pay
Other local payment methods shown at checkout
All payment information is processed through secure encrypted payment channels.
Shipping Information
Safe Battery Packaging
Battery cells are carefully packed to help reduce vibration, impact, and transportation damage.
EU / US Tax-Free Shipping Option
EU / US tax-free shipping options may be available depending on the warehouse, destination, order quantity, and shipping method. Please refer to the shipping option shown at checkout or contact customer service before placing bulk orders.
Battery Shipping
Lithium battery products may require special shipping channels depending on destination country or region. Delivery time may vary due to logistics route, customs clearance, local delivery service, and peak seasons.
Tracking Information
After shipment, tracking information will be provided so customers can check order status online.
After-Sales Service
MWNKDS provides professional customer support for every order.
Our support includes:
Product consultation
Order status assistance
Shipping tracking support
Battery parameter confirmation
Basic installation guidance
Quality issue support
Replacement or refund assistance according to store policy
If the product arrives damaged or has a quality issue, please contact us with:
Order number
Clear photos or videos
Packaging photos
Voltage test data if available
Detailed issue description
After verification, we will provide a suitable solution according to the actual situation and store policy.
Warranty Notice
The battery cell must be used under recommended operating conditions and with a compatible LiFePO4 BMS.
The following situations may not be covered by warranty:
Short circuit
Reverse polarity connection
Overcharge or over-discharge
Water damage
Physical impact or deformation
Unauthorized disassembly
Incorrect series or parallel connection
Use without proper BMS protection
Damage caused by incompatible charger or inverter
Improper storage or installation
Please test and confirm the cell condition before assembling it into a battery pack.
FAQ
Q1: Is this a complete battery pack?
No. This product is a single 3.2V 314Ah LiFePO4 battery cell. To build a battery pack, you need a compatible BMS, busbars, wiring, charger, case, and protection accessories.
Q2: Can I build a 12V battery pack?
Yes. 4 cells in series can be used to build a 12V LiFePO4 battery system. A suitable 4S BMS is required.
Q3: Can I build 24V, 36V, or 48V systems?
Yes. 8S, 12S, and 16S configurations can be used for 24V, 36V, and 48V battery systems. Please use a matching BMS and charger.
Q4: What is the cycle life?
The battery cell supports 6000+ cycles at 80% DOD under proper operating conditions.
Q5: What is included in the package?
The package includes the battery cell, screw, copper sheet, and insulation board.
Q6: What applications is it suitable for?
It is suitable for solar storage, wind energy systems, EV projects, electric bicycles, electric motorcycles, golf carts, RVs, caravans, e-boats, power tools, LED street lamps, inverters, UPS backup systems, and off-grid energy storage.
Final Selling Point
Build a powerful and reliable energy storage system with the MWNKDS EVE MB31 3.2V 314Ah LiFePO4 Battery Cell.
High capacity, low internal resistance, strong discharge performance, and long cycle life make it ideal for solar storage, EV projects, RV power, e-boats, off-grid systems, inverters, UPS backup power, and wind energy systems.
MWNKDS Energy Storage Solutions — Reliable, Safe, Efficient.
Additional Information
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Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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