{"product_id":"eve-mb31-314ah-lifepo4-cell-ep-energypoland-stock","title":"EVE MB31 314Ah LiFePO4 Cell|EP Energy(Poland Stock)","description":"\n\u003cp\u003eUltimate 8000-Cycle High-Density Energy Storage for Solar, Off-Grid, RV \u0026amp; Marine DIY Battery Packs\u003c\/p\u003e\n\n\n\u003cp\u003eEngineered for performance-driven DIY enthusiasts and off-grid power installers, the \u003cstrong\u003eEVE MB31 314Ah Cell\u003c\/strong\u003e represents the gold standard in Prismatic Lithium Iron Phosphate (LiFePO4) technology. Featuring factory-fresh \u003cstrong\u003eGrade A quality\u003c\/strong\u003e, an incredible \u003cstrong\u003e8,000 deep-cycle lifespan\u003c\/strong\u003e, and an innovative dual-terminal design, the MB31 delivers reliable, heavy-duty energy storage for home solar arrays, RV power setups, marine vessels, and custom DIY battery packs.\u003c\/p\u003e\n\u003c!-- H2: Choose the correct number of battery cells --\u003e\n\u003ch2\u003eChoose the correct number of battery cells\u003c\/h2\u003e\n\u003cp\u003eBuilding a custom battery bank requires matching cell configurations in series (S) and parallel (P) to hit your system's target nominal voltage and total usable energy capacity. Use the comprehensive guide below to select the exact number of EVE MB31 3.2V 314Ah cells for your application:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem Voltage\u003c\/th\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003eCells Required\u003c\/th\u003e\n\u003cth\u003eNominal Energy\u003c\/th\u003e\n\u003cth\u003eTypical Application\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e12V System\u003c\/td\u003e\n\u003ctd\u003e4S1P\u003c\/td\u003e\n\u003ctd\u003e4 Cells\u003c\/td\u003e\n\u003ctd\u003e4.019 kWh\u003c\/td\u003e\n\u003ctd\u003eCamper Vans, Small Boats, Portable Power Stations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e24V System\u003c\/td\u003e\n\u003ctd\u003e8S1P\u003c\/td\u003e\n\u003ctd\u003e8 Cells\u003c\/td\u003e\n\u003ctd\u003e8.038 kWh\u003c\/td\u003e\n\u003ctd\u003eOff-Grid Cabins, Large RVs, Overland Trucks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e48V System\u003c\/td\u003e\n\u003ctd\u003e16S1P\u003c\/td\u003e\n\u003ctd\u003e16 Cells\u003c\/td\u003e\n\u003ctd\u003e16.076 kWh\u003c\/td\u003e\n\u003ctd\u003eHome Solar Energy Storage (ESS), Industrial Backups\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e48V High Capacity\u003c\/td\u003e\n\u003ctd\u003e16S2P\u003c\/td\u003e\n\u003ctd\u003e32 Cells\u003c\/td\u003e\n\u003ctd\u003e32.153 kWh\u003c\/td\u003e\n\u003ctd\u003eWhole-House Off-Grid Solar, Commercial Energy Banks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- H2: Features --\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003ch3\u003e1. Grade A Brand New Quality \u0026amp; Factory Fresh Performance\u003c\/h3\u003e\n\u003cp\u003eEvery EVE MB31 cell is 100% brand new direct from production with factory-fresh QR codes intact. Delivering full 314Ah nominal capacity and 1004.8Wh nominal energy, each cell undergoes rigorous factory testing to maintain ultra-low initial internal resistance (ACR: 0.18 ± 0.05 mΩ). This ensures minimal thermal generation and uniform voltage matching across your entire pack.\u003c\/p\u003e\n\u003ch3\u003e2. Exceptional 8000 Cycles \u0026amp; 15-Year Service Life\u003c\/h3\u003e\n\u003cp\u003eInvest once for decades of clean, reliable power. The MB31 offers an extraordinary \u003cstrong\u003e8,000 deep cycle life down to 70% SOH\u003c\/strong\u003e under standard 0.5P\/0.5P charge and discharge conditions at 25°C. With a design lifespan exceeding 15 years, it dramatically lowers your cost per kilowatt-hour compared to traditional lead-acid or standard lithium-ion batteries.\u003c\/p\u003e\n\u003ch3\u003e3. High Efficiency \u0026amp; Power Delivery\u003c\/h3\u003e\n\u003cp\u003eBoasting an energy efficiency of ≥93.5% at 0.5P rate, the MB31 converts solar energy into usable power with minimal loss. It supports continuous charging and discharging power up to 0.5P (502.4W per cell), maintaining a low temperature rise (≤10°C) during heavy usage to protect long-term cell health.\u003c\/p\u003e\n\u003ch3\u003e4. Uncompromising Safety \u0026amp; Certified Stability\u003c\/h3\u003e\n\u003cp\u003eSafety is paramount for any custom energy system. The EVE MB31 chemistry features inherently stable Lithium Iron Phosphate (LFP) matrix that resists thermal runaway. Furthermore, the cell has successfully passed stringent safety performance standards (GB\/T 36276)—including over-charge, over-discharge, short-circuit, crush, drop, thermal runaway, and heating tests—with \u003cstrong\u003eZero Fire and Zero Explosion\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c!-- H2: Why Choose Double Holes Cell? --\u003e\n\u003ch2\u003eWhy Choose Double Holes Cell?\u003c\/h2\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe EVE MB31 incorporates an upgraded dual-hole aluminum terminal design on both positive and negative poles. For DIY builders and professional pack assemblers, this provides distinct engineering advantages:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Resistance \u0026amp; Lower Heat:\u003c\/strong\u003e Securing busbars with two screws per terminal doubles the contact surface area. This halves contact resistance, preventing hotspots and power loss during high-current discharges.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Structural Stability:\u003c\/strong\u003e Twin-screw fastening completely prevents busbars from rotating or loosening under high mechanical vibration—essential for mobile applications like RVs, overland trucks, and marine vessels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless Flexible Wiring:\u003c\/strong\u003e The double-hole setup makes it effortless to connect main power cables, active balancer wires, and BMS sense leads concurrently on separate fastening points without stacking lugs awkwardly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Torque Stress:\u003c\/strong\u003e Spreading tightening torque across two M6\/M8 mounting points prevents terminal thread stripping or internal pole damage.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- H2: Packing List --\u003e\n\u003ch2\u003ePacking List\u003c\/h2\u003e\n\u003cp\u003eEach 4-cell kit is shipped in heavy-duty UN38.3 certified protective foam packaging to guarantee complete safety during transit.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003ch3\u003eOne Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan\u003e✓\u003c\/span\u003e \u003cstrong\u003eEVE Cell x 4\u003c\/strong\u003e  \u003cspan\u003e(Grade A EVE MB31 3.2V 314Ah Prismatic Cell with Factory QR Code)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e✓\u003c\/span\u003e \u003cstrong\u003eEpoxy Plate x 4\u003c\/strong\u003e  \u003cspan\u003e(High-grade FR4 insulating plates for inter-cell compression \u0026amp; electrical isolation)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e✓\u003c\/span\u003e \u003cstrong\u003eRigid Busbar x 4\u003c\/strong\u003e  \u003cspan\u003e(Heavy-duty nickel-plated copper busbars designed for double-hole terminals)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e✓\u003c\/span\u003e \u003cstrong\u003eScrew x 16\u003c\/strong\u003e  \u003cspan\u003e(Stainless steel terminal screws matching all dual-hole busbars)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- H2: Applications --\u003e\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eThanks to its high energy density (1004.8Wh per single cell), high safety standards, and robust deep-cycling abilities, the EVE MB31 cell is the ideal building block for a wide range of mobile and stationary battery applications:\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOff-Grid Solar Energy Storage Systems (ESS):\u003c\/strong\u003e Build custom 12V, 24V, or 48V home battery banks (16S 15kWh to 30kWh+) for continuous solar self-consumption, peak-shaving, and emergency backup power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRVs, Motorhomes \u0026amp; Camper Vans:\u003c\/strong\u003e Upgrade from heavy lead-acid or small lithium batteries to a high-capacity LiFePO4 bank that powers air conditioners, induction cooktops, and off-grid electronics effortlessly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMarine \u0026amp; Boat Power Supplies:\u003c\/strong\u003e Reliable deep-cycle power for electric trolling motors, house power banks, and sailboat navigation gear with zero maintenance and excellent resistance to sea-motion vibrations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDIY Solar \u0026amp; Power Station Projects:\u003c\/strong\u003e Perfect for geeks, solar installers, and off-grid tinkerers creating custom high-output power stations, off-grid cabins, and mobile work trucks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommercial \u0026amp; Telecom Backups:\u003c\/strong\u003e Ideal for uninterruptible power supply (UPS) setups, remote telecommunication towers, and agricultural solar pumps.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- Technical Quick Spec Table --\u003e\n\u003cdiv\u003e\n\u003ch3\u003eTechnical Specifications at a Glance\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Capacity \/ Energy\u003c\/td\u003e\n\u003ctd\u003e314 Ah \/ 1004.8 Wh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e3.2 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Window\u003c\/td\u003e\n\u003ctd\u003e2.5 V – 3.65 V (2.0V cut-off below 0°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInitial Internal Resistance (ACR)\u003c\/td\u003e\n\u003ctd\u003e0.18 ± 0.05 mΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle Life (25°C, 0.5P\/0.5P)\u003c\/td\u003e\n\u003ctd\u003e≥ 8000 Cycles (to 70% SOH)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell Dimensions (L × W × H)\u003c\/td\u003e\n\u003ctd\u003e173.7 mm × 71.7 mm × 207.2 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e5600g ± 300g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge \/ Discharge Temperature\u003c\/td\u003e\n\u003ctd\u003eCharge: 0°C ~ 60°C | Discharge: -30°C ~ 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n","brand":"EVE","offers":[{"title":"Default Title","offer_id":49736290042008,"sku":null,"price":79.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0735\/6052\/2904\/files\/EVEMB31Cell_9.jpg?v=1787583329","url":"https:\/\/elemparts.com\/products\/eve-mb31-314ah-lifepo4-cell-ep-energypoland-stock","provider":"EP Energy","version":"1.0","type":"link"}