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6/28/21 6:39 GMT

LiFePO4 6.4V 18Ah 21700 Cylindrical Lithium Ion Battery For EV PHEV

LiFePO4 6.4V 18Ah 21700 cylindrical lithium ion battery for UPS,EV/PHEV/Solar System,Storage system,Backup power supply. Product Information: Type: LiFePO4( Lithium Iron Phosphate) Max Charge: 1C Max Discharge: 2C Max Pulse Discharge Current: 1C Internal Impedance: ≤30mΩ Capacity: 18Ah Cycle Life: ≥2000cycles @ 100% DOD Warranty: 1 Year Nominal Capacity: 18Ah/customized Nominal Voltage: 6.4V Weight: 660± 5 g Size: Height:81mm*Length:108*Thickness:68mm Applicati , on: UPS,EV/PHEV/Solar System,Storage,Starting Power Supply 　　 Production Description: 1. General This product specification describes the technique requirements, test procedures and precaution notes of Cylindrical Lithium-ion phosphate rechargeable cell, manufactured by Shenzhen AMT Technology Co., Ltd. 2. Cell’s Characteristic: Sturdy and pressure resistant steel envelope High capacity Excellent cycle life Excellent high and low temperature performance Steady output voltage Low self-discharge Double safety protection With outstanding high level of vibrations and shocks LiFePO4 6.4V 18Ah 21700 Cylindrical Lithium Ion Battery For EV PHEV 0 LiFePO4 6.4V 18Ah 21700 Cylindrical Lithium Ion Battery For EV PHEV 1 3. Electrochemical Performance Test Item Test Method Criteria AC Impedance Cell shall be measured at 1000 Hz after charged per standard charging. ≤ 30 mΩ Initial Capacity Cell shall be charged standard per charging. and discharged per standard discharging within 1h after full charge. Cini ≥18Ah Cycle Life Cell shall be charged at CC/CV mode(CC: 1 C, CV: 3.65 V, End-of- charge current: 0.05 C); After stored for 30 min, cell shall be discharged at CC mode(1 C, End-of-charge voltage: 2.0 V); After stored for 30 min, tests shall be continued for 2000 times. Capacity retention ≥ 80 % High-rated Discharging Performance Cell shall be charged per standard charging, and discharged at 6C to ending voltage at RT. Discharge Capacity: ≥ 90%Cini Low Temperature Performance Cell shall be charged per standard charging and stored in atemperature-controlled environment for 4h.Then discharged cell at 1C to ending voltage. Discharge Capacity: ≥ 70%Cini(-20°C) Room Temperature Storage Test Cell shall be charged per standard charging, then stored at 25 °C ±2 °C for 28 days. Finally discharged cell at 1 C to ending voltage. Capacity retention ≥90% High Temperature Storage Test Cell shall be charged per standard charging, then stored at 55 °C ±2 °C for 7 days. After standing for 5h,discharged cell per standard discharging. Capacity retention ≥ 90 % Remark: 1.“Standard Charging” means that in standard test conditions, charge the cell at a constant current of 1 C until the voltage reaches 3.65 V, then charge it at a constant voltage of 3.65 V until the current decreases less than 0.05 C and placed for 1 h. 2.“Standard Discharging” means that in standard test conditions, discharge the cell at a constant current of 1 C until the voltage reaches 2.0 V. 4. Reliability Test Constant Temperature and Humidity Test Cell shall be charged per standard charging, and stored in 45 °C ±2 °C (90~95% RH) for 48 h. Then be placed in RT for 2h and checked for 1h. No distortion, no rust, no fume and no explosion. Thermal Shock Test Cell shall be charged per standard charging and put into an oven.Temperature inside the oven will drop to -40 °C in 60min and remain for 90 min. Then it will rise to 25 °C in 60 min and keep rising to 85 °C in 90 min, following by remaining for 110 min. And it will drop to 25 °C in 70 min.Repeat this process for 5 times, then check it for 1h. No explosion, no fire, no leakage. Low-pressure Test Cell shall be charged per standard charging, then stored it for 6h at an absolute pressure of 11.6 kPa (RT). Check it for 1h. No explosion, no fire, no leakage. Drop Test Cell shall be charged per 3.2, then dropped from a height of 1.5 m onto the concrete ground. Positive and negative terminals of cells shall be towards the ground. Check it for 1h. No explosion, no fire. Soaking Test Cell shall be charged per standard charging, then completely soaking into NaCl solution (3.5 wt %) for 2h. Check it for 1h. No explosion, no fire. 5. Safety Test External Short-Circuiting Tes Cell shall be charged per standard charging, then short-circuited by connecting the positive and negative terminals with a resistance of <5 mΩ for 10 min. Check it for 1h. No explosion, no fire. Over-charge Test Cell shall be charged per standard charging, then charged at 1C to ending voltage of 5.5 V or charged at 1C for 1h. Check it for 1h. No explosion, no fire. Over-discharge Test Cell shall be charged per standard charging, then discharged at 1C for 90min. Check it for 1h. No explosion, no fire, no leakage. Crush Test Cell shall be charged per standard charging,then crush the cell perpendicularly to the cell plate at a rate of (5±1) mm/s with a semi-cylinder (radius of 75 mm). When met any of the following criteria, stopping crushing and check it for 1h. 1. Voltage reaches 0V; 2. Deformation reaches 30%; 3. Pressure reaches 200 kN. No explosion, no fire. Acupuncture Test Cell shall be charged per standard charging,then acupuncture the cell perpendicularly to the cell plate at a rate of (25±5)mm/s with a ϕ5 mm~ϕ8 mm steel needle and remain it inside.The acupuncturing location shall be near the geometric center of plane. Check it for 1h. No explosion, no fire Heating Test Cell shall be charged per standard charging, then heated in an oven.Temperature will rise to 130 °C±2 °C at a rate of 5 °C/min and remain for 30 min. Check it for 1h. No explosion, no fire.

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86-0-13728607484

Shenzhen AMT Technology Co., Ltd.
Room 14F,Building A2,Zhujiang Plaza,Longxiang Road,Longgang District,Shenzhen,Guangdong,China
Shenzhen
China