Why Choose This 314Ah Lithium Battery ?
In the field of new energy power supply, capacity, lifespan and safety are the core concerns of users.
✅ 10,000 cycles: The energy storage project is maintenance-free for 8 years, and the operation and maintenance costs are reduced by 60%.
✅ -30 to 60℃ wide temperature range: Suitable for high temperatures in Southeast Asia / low temperatures in the north, with no additional temperature control costs.
✅ Direct replacement of 280Ah: No need to modify the PACK, and the upgrade cost is the lowest.
✅ Fully safety certified: 9 safety tests, no risk of explosion / fire.
Product Features
- Super large capacity and energy: 314Ah nominal capacity, 1004.8Wh nominal energy, meeting the long-term power supply requirements for high-power devices.
- Extremely long durability: Normal temperature cycle life 10,000 cycles, long calendar life, room temperature charge retention rate ≥ 95% (28 days), high temperature capacity recovery rate ≥ 94% (60℃, 7 days).
- Wide temperature adaptability: Optimal working temperature 15~35℃, charging temperature 0~55℃, discharging temperature – 30~60℃, suitable for various regional climate conditions.
- Low internal resistance and high efficiency: AC internal resistance (ACR) 0.15~0.3mΩ, DC internal resistance (DCR) 0.3~0.5mΩ, energy conversion loss small.
- Multiple safety protections: Built-in overvoltage, undervoltage, overcurrent, overtemperature, short circuit, reverse connection and other protection functions, passing through heating, squeezing, dropping, low air pressure and other full-scenario safety tests.
- Environmental protection compliance certification: No heavy metals and toxic substances, in line with RoHS 2.0 standards, 10 types of prohibited substances all below the limit requirements.
Advantages
- High energy density: Mass energy density > 178 Wh/kg, volume energy density > 385 Wh/L, releasing large energy in a small volume.
- Fast charging support: Supports constant power (0.5P = 502.4 W), conventional (157A CC-CV), and step charging modes. Different temperature-specific fast charging strategies are available to shorten downtime.
- Stable performance: Excellent capacity retention rate across all temperature ranges (-20℃ ≥ 70%, 0℃ ≥ 80%, 25℃ 100%), energy retention rate ≥ 90%.
- Maintenance-free design: No need for professional daily maintenance. Only regular checks of terminal connections are required, suitable for unmanned scenarios.
- Global compliance standards: Compliant with international and domestic standards such as GB/T36276-2018 and IEC62619-2017, ensuring smooth cross-border sales.
Applicable Scenarios
- Energy Storage System (ES): Suitable for off-grid energy storage projects for solar and wind energy, storing excess electricity for use during nighttime or power outages, reducing reliance on the grid, and suitable for residential and industrial large-scale energy storage stations.
- Electric Vehicle (EV): Can provide power support for electric cars, buses, and heavy-duty electric vehicles. With high capacity, it meets the requirements for long-range travel, and has a long cycle life, suitable for frequent charging and discharging.
- Industrial Standby Power Supply: As the core component of UPS uninterruptible power supply, it provides emergency power supply for critical facilities such as communication stations, monitoring systems, and medical equipment, ensuring continuous operation of the equipment.
- Outdoor Mobile Power Supply: Suitable for outdoor scenarios such as RVs, ships, and camping. Without the risk of acid leakage, it operates quietly and can meet the power supply needs of multiple devices such as microwave ovens, air conditioners, and navigation equipment simultaneously.
- Specialized Work Equipment: Suitable for equipment operating in low-temperature environments and high-power industrial tools. With wide temperature characteristics and high power output, it is compatible with harsh usage conditions.
Specification
| Items | Specification | Condition/Notes |
| Nominal Capacity | 314Ah | / |
| Nominal Energy | 1004.8Wh | / |
| Nominal Voltage | 3.2V | / |
| Charge/Discharge Voltage Range | 2.5V～3.65V | T>0°C |
| 2.0 V～3.65V | T≤0℃ ，Forbid continuous charging | |
| Cell Weight | 5630±200g | / |
| Weight Energy Density | >178Wh/kg | / |
| Volume Energy Density | >385Wh/L | / |
| ACR | 0.15mΩ≤R≤0.3mΩ | Fresh cell(17%±3%SOC)(Low internal resistance = High charging and discharging efficiency) |
| DCR | 0.3mΩ≤R≤0.5mΩ | 50%SOC@3C30S，25±2℃ |
Working temperature and charging specifications
| Items | Specification | Condition/Notes |
| Optimum Working Temperature | 15～35℃ | / |
| Charge Temperature Range | 0～55℃ | / |
| Discharge Temperature Range | -30～60℃ | Cell temperature T≤60°C |
| Standard Power Charge | 157A (constant current);3.65V (constant voltage); 15.7A cut-off (15℃ ≤ T < 45℃) | Constant Power; Cut off condition (terminating);Temperature |
| Regular Charge (Slow Charge) | 157A; 3.65V; 15.7A; 15℃≤T<45℃ | Constant current;Constant voltage;Cut off condition (terminating);Temperature |
| Step Charge | / | Fast charging strategy at different temperature |
Download Technical Datasheet (PDF)
Appearance And Dimensions
Appearance: No obvious scratches or cracks. The copper terminals have no copper green corrosion. The weld seams have no leakage of liquid. The explosion-proof film is intact.
Thickness: (71.95 ± 0.5) mm (including the thickness of the outer coating film, 17% ± 3% SOC, 300 ± 20 kgf).
Width: (174.8 ± 0.5) mm (including the thickness of the outer coating film).
Height (without terminals): (204.5 ± 0.5) mm (including the thickness of the outer coating film and the top cover patch).
Height (including terminals): (207.1 ± 0.5) mm (including the thickness of the outer coating film and the top cover patch).
Remark：The dimensions are shown in millimeters (mm)
Notes
Warning for using the lithium-ion rechargeable cell. Mishandling of the cell may cause heat, fire and deterioration in performance. Be sure to observe the following.
✅Precautions
- When using a device equipped with a battery, refer to the user manual before use.
- Check the orientation of the cathode and anode terminals before packaging.
- The terminal or wire is connected to the cell module, pay attention to the insulation to prevent short circuit.
- Store the cell in a cool dry place (≤35°C, 30%~50%SOC，Storage ambient humidity < 85% RH, no Condensation, charge and discharge once every 3 months ) when not in use for a long time.
- Do not place the cell in direct sunlight or heat source to prevent high temperature of the cell.
- Do not wear metal accessories (such as rings, watches, accessories, etc.) when handling cell units.
- Do not place the cell outside the operating temperature range specified in this document.
⚠️Prohibited Items
- Do not charge more than the maximum charge rate.
- Do not disassemble or modify the Cell.
- Do not throw or hit the battery.
- Do not pierce the battery with a sharp object. (eg nails, knives, pens, electric drills)
- Do not mix with other cell or module units.
- Do not use both new and old cell in PACK.
- Do not place the cell at a temperature higher than 60 °C.
- Do not put the cell in a microwave or high pressure container.
- Do not connect the positive and negative terminals with conductive materials. (eg metal, wire)
- Do not allow the cell to be wetted or immerse the cell in water or sea water.
- Do not use the battery in a manner other than the manufacturer’s written agreement.
Environmental Protection And Compliance
This product fully complies with the requirements of the EU 2015/863 directive and the 2006-66-EC battery directive. The 10 RoHS prohibited substances all meet the limit standards:
- Cadmium (Cd) ≤ 20PPM, Lead (Pb) ≤ 40PPM, Mercury (Hg) ≤ 5PPM.
- Hexavalent chromium (Cr⁶⁺), polybrominated biphenyl (PBB), polybrominated diphenyl ether (PBDE) are all ≤ 1000PPM.
- Phthalate esters (DEHP, BBP, DBP, DIBP) are all ≤ 1000PPM.
- RoHS 2.0 limited substance:Containing 4 types of phthalates(DEHP/BBP/DBP/DIBP).
Packaging
Standard packaging: Each single battery is packaged with anti-static bags + foam cushioning + cardboard box, equipped with insulation protection accessories.
Custom packaging: Supports OEM/ODM customization, and packaging specifications can be adjusted according to order requirements.
Logistics compatibility: Supports DHL, air freight, sea freight, etc. of various transportation methods, and the packaging complies with international transportation safety standards.
FAQS
Q1: Is this battery suitable for outdoor energy storage projects? Is additional protection required?
A: Absolutely! The product’s discharge temperature range is -30~60℃, capable of withstanding extreme climates, and has passed IP protection-related tests (with PACK design). Outdoor installation only requires avoiding long-term water immersion, no additional dust-proof and waterproof treatment is required.
Q2: What are the BMS protection thresholds of the battery?
A: The built-in BMS system includes multiple protection thresholds: severe overvoltage alarm at 3.8V (forced power-off), general overvoltage alarm at 3.7V (over 5s power-off), severe undervoltage alarm at 1.8V (-30~0℃)/2.0V (0~55℃), high temperature alarm at 55℃ (reduce power)/60℃ (prohibit use), providing comprehensive safety protection.
Q3: What should be noted when designing the PACK?
A: The maximum allowable pressure during PACK assembly is 600kgf (17%±3% SOC), the optimal pressure after assembly is 300±20kgf; it is necessary to use special steel-made fixtures (45# steel, thickness 1cm), fixed with 4 M12 bolts, and insulation treatment to avoid short circuits.
Q4: How to restore performance after long-term storage?
A: Before using for the first time after storage, it is recommended to charge fully according to the regular charging mode, leave it to stand for 20 hours, then discharge; if the capacity is reduced, after 2~3 charge-discharge cycles, it can be restored to more than 90% of the rated capacity.
Q5: Does the product support cross-border sales? What certifications are there?
A: Yes! The product complies with GB/T36276-2018, IEC62619-2017, RoHS, etc., passes multiple safety tests, can smoothly pass customs inspection, and is suitable for major markets worldwide such as North America, Europe, and Southeast Asia.
Why Choose Us?
Technical strength guarantee: Hefei Guoxuan Gaoke independently researches and produces, relying on years of battery manufacturing experience, the product performance has been rigorously tested and verified.
Customized services: Provide OEM/ODM services, can customize capacity, voltage, packaging, and BMS parameters according to customer needs, MOQ is flexible.
Full cycle support: Provide multi-language technical manuals (including stepwise charging matrix, SOC-OCV table, etc.), 24-hour online technical consultation, and on-site installation guidance for batch orders.
Global customer trust: The product has been widely used in energy storage stations, electric vehicles, outdoor power supplies, etc., serving 10,000+ customers worldwide, and the quality and reputation are obvious to all.
“Our industrial and commercial energy storage project utilized 500+ of these 314Ah batteries, operating stably for 18 months, with the capacity retention remaining above 95%. The wide temperature performance was also unaffected in the northern winter.” – The purchasing director of a certain new energy technology company
“As an electric vehicle manufacturer, we value the cycle life and safety of batteries. The performance of this product after 10,000 cycles exceeded expectations, and it passed the thermal runaway test, making our products more competitive in the market.” – The technical director of a certain automotive manufacturer
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