Product Description
Power your most ambitious energy storage projects with the 4Pcs EVE MB31 3.2V 314Ah LiFePO4 Battery Cells. As a global top-tier manufacturer (Ranked Top 2 in global energy storage cell shipments), EVE delivers unparalleled reliability with the MB31 model. Built on a mature and stable 314Ah platform, these Grade A prismatic cells feature a robust aluminum shell and an ultra-low internal resistance. With a staggering 8000+ deep cycle life, they are the ultimate cost-effective solution for DIY home solar storage, commercial & industrial ESS (C&I), and grid-side power stations. Experience safe, high-capacity, and long-lasting power for the future of energy.
Why Choose EVE MB31?
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Massive Capacity & Power: Authentic EVE MB31 prismatic LiFePO4 battery cells with 3.2V nominal voltage and an ultra-high 314Ah capacity, perfect for building large-scale energy storage systems.
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Industry-Leading 8000 Cycles: Engineered for extreme longevity, offering up to 8000 cycles (at 25°C) with a 70% capacity retention rate, drastically reducing your long-term cost per kWh.
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Ultra-Low Internal Resistance: Features an extremely low internal resistance of 0.18±0.05 mΩ, ensuring high charge/discharge efficiency (0.5P max) and minimal energy loss.
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Mature & Safe Platform: Built on EVE's proven 314Ah platform with an aluminum shell for excellent heat dissipation. Certified with UN38.3, GB, IEC, and UL for ultimate safety.
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Versatile Energy Storage: Ideal for DIY home ESS (Energy Storage Systems), commercial & industrial (C&I) energy storage, grid-side power stations, and solar/wind power integration.
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Complete Accessories: Each cell comes with 1 connecting busbar and 4 M6 bolts for easy assembly (Note: M6 adapters and extra busbars are sold separately).
Key Features
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High-Efficiency 0.5P Rate: Supports a maximum continuous charge and discharge power rate of 0.5P, ensuring fast energy throughput without compromising safety.
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Wide Operating Temperature: Operates flawlessly in diverse climates with a charging temperature range of 0°C~60°C and a discharging range of -30°C~60°C.
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Robust Construction: Heavy-duty design weighing approximately 5600g, featuring overcharge protection and incredible structural stability for long-term installations.
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Global Top-Tier Quality: Backed by EVE's 25 years of lithium battery expertise, guaranteeing top-tier consistency and batch reliability.
Parameters
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Brand: EVE
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Model: MB31 (Upgraded version of LF280K)
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Battery Type: LiFePO4 (Lithium Iron Phosphate) Prismatic Cell
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Nominal Voltage: 3.2V
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Nominal Capacity: 314Ah (314000 mAh)
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Energy Density: 179 Wh/kg
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Cycle Life: ≥8000 Cycles (25°C)
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Internal Resistance: 0.18±0.05 mΩ
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Max Continuous Charge/Discharge Rate: 0.5P
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Charge Voltage: 3.65V
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Dimensions (LWH): 207.2 * 173.7 * 71.7 mm
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Weight: 5600 ± 300 g (Packaging weight: 5900 g)
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Operating Temperature: Charge: 0°C~60°C / Discharge: -30°C~60°C
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Storage Temperature: -20°C~45°C
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Combination Method: Single Cell (Can be assembled into 12V/24V/48V/High-Voltage packs)
Applications
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Residential Energy Storage (ESS): The perfect building block for DIY home solar battery banks and off-grid power systems.
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Commercial & Industrial (C&I) ESS: Reliable power for peak shaving, valley filling, and large-scale facility backups.
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Power Generation & Grid: Ideal for grid-side shared energy storage, wind power, and solar power integration projects.
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Telecom & Backup Power: Delivers stable, long-duration backup power for critical infrastructure.
FAQ
Q1: Are these cells brand new and Grade A?
A1: Yes, these are 100% authentic brand new EVE MB31 Grade A prismatic cells. They are rigorously tested for exact capacity, internal resistance, and voltage consistency before shipping.
Q2: Can I connect these 314Ah cells in series or parallel?
A2: Absolutely. You can connect them in series to build higher voltage systems (e.g., 12V, 24V, 48V, or higher) or in parallel to increase capacity. Always ensure the cells are top-balanced before assembly.
Q3: Do I need a Battery Management System (BMS)?
A3: Yes, a BMS is mandatory. It protects the cells from overcharge, over-discharge, over-current, and short circuits. Please ensure your BMS is rated for the 0.5P continuous charge/discharge rate of these cells.
Q4: What comes in the package?
A4: You will receive 4 x EVE MB31 314Ah Cells. Each cell includes 1 connecting busbar and 4 M6 bolts for easy terminal connection. (Note: Special terminal adapters are not included).
To ensure safe delivery, we offer Air freight (7-15 working days) for faster service, and Ocean shipping (30-45 days) for more economical bulk orders (both excluding customs inspection time).