Product Description:
The EVE MB31 is the flagship 3.2V 314Ah lithium iron phosphate (LiFePO4) prismatic battery cell, representing a major capacity upgrade from the industry-standard 280Ah while maintaining a nearly identical footprint (207.2mm x 173.7mm x 71.7mm). With an impressive 314Ah rating, this cell delivers approximately 12% more energy storage without requiring significant design changes to your existing battery packs.
Weighing approximately 5.66kg and featuring an ultra-low internal resistance of ≤0.3mΩ, the MB31 ensures maximum energy transfer efficiency and minimal heat generation even under sustained heavy loads. Built with advanced LiFePO4 chemistry, it offers excellent thermal stability, a long cycle life, and superior safety. It is the ultimate core building block for large-scale energy storage systems, commercial ESS racks, and high-capacity off-grid power walls.
Key Features:
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EVE MB31 Premium Cell: High-quality 314Ah prismatic LiFePO4 battery from the trusted brand EVE.
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314Ah Upgrade Capacity: Delivers ~12% more capacity than 280Ah in the same classic footprint.
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Low Internal Resistance (≤0.3mΩ): Ensures efficient energy transfer and minimal heat generation during high-current discharge.
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Advanced LiFePO4 Safety Chemistry: Superior thermal stability, explosion-proof design, and enhanced safety against overcharging and short circuits.
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Long Cycle Life: Designed for thousands of charge/discharge cycles, providing exceptional long-term value.
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Optimized High-Energy Form Factor: Measures 207.2mm x 173.7mm x 71.7mm — the standard size for large prismatic cells.
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Versatile Applications: Ideal for large home ESS, commercial storage cabinets, RV solar upgrades, and large-scale DIY battery pack assembly.
Product Parameters:
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Brand: EVE
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Model: MB31
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Cell Type: LiFePO4 (Lithium Iron Phosphate)
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Nominal Capacity: 314Ah
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Nominal Voltage: 3.2V
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Internal Resistance: ≤0.3mΩ
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Weight: 5660g ± 300g
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Dimensions: 207.2mm (Length) x 173.7mm (Width) x 71.7mm (Height)
Applications:
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Large Home Energy Storage: Core power cell for high-capacity residential solar battery banks and home ESS.
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Commercial Storage Cabinets: Reliable core for standardized ESS racks and commercial energy storage cabinets.
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RV & Camper Power Systems: High-capacity upgrade for large 12V/24V RV battery banks.
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Off-Grid & Backup Power: Massive storage for large-scale off-grid solar farms and emergency backup systems.
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Large DIY Battery Packs: Ideal for building custom 12V, 24V, or 48V battery packs with maximum energy density.
Frequently Asked Questions (FAQ):
Q1: What is the capacity of this battery?
A1: This EVE MB31 cell provides a substantial 314Ah capacity, offering approximately 12% more energy storage than the standard 280Ah cells.
Q2: What is the internal resistance of this cell?
A2: The internal resistance is ≤0.3mΩ, ensuring efficient power transfer and low heat generation even under heavy sustained loads.
Q3: What is the advantage of the MB31 over the LF280K?
A3: The MB31 delivers 34Ah more capacity in the exact same 207.2mm x 173.7mm x 71.7mm form factor as the LF280K, allowing you to upgrade your pack capacity without modifying your battery box layout.
Q4: How many cells do I need for a 12V battery pack?
A4: For a standard 12.8V system, you will need 4 cells connected in series (4S). For a 24V system, use an 8S configuration.
Q5: What kind of charger should I use for this battery?
A5: You must use a charger specifically designed for 3.2V LiFePO4 batteries with a 3.65V cut-off voltage. A BMS (Battery Management System) is essential for safe pack assembly.
