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Hefei Hongye Lithium Energy Science&Technology Co. Ltd.
Contacts:
Lillian
Mobile +wechat+whatsapp:
+86 13570852925
Business phone number:
+86 0551 66105045
Enterprise address:
No.33 YUZHU Road,High-Tech Zone,Hefei City,Anhui Province. China
Email:
[email protected]
[email protected]
CTO: [email protected]

26650 lifepo4 battery Rechargeable LFP battery 3.2v 3800mAh
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Description:

lithium iron phosphate (LFP battery) 26650-3000mAh 3.2V, can be charged to 3.7v at temperature of 25±3℃based on 1C condition ,discharged to 2.5v . discharge capacity is larger than 80% of original capacity, min cycle times is 2000times,No fire breaking out , no break,no leak or explode during the test of over discharge & over charge、vibration,weight strike and fall .

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    lifepo4 battery 3.2v cell 3800mAh main specification

    NoItemNominalMark
    1Nominal capaicty3800mAh0.5C, 1C current is 3800mA
    2Capacity range3700~3900mAh0.5C
    3Nominal voltage3.2 V
    4AC internal resistance≤25mΩ
    5Charge conditioncut off voltage3.65±0.05V0.5C constant current charge to 3.65V,constant voltage charge to current down to 0.01C
    Cut off current0.01C
    6Max charge current3.8A
    7Discharge cut off voltage2.5V
    8Standard continuous discharge current1.9A
    9Fast continuous discharge current3.8A
    10Max continuous discharge current11.4AJust for cell
    11Pulse discharge current15A,5s
    12Cycle performance2000 times(100%DOD) 1C charge/1C discharge,capacity retention ≥80%
    4000 times(80%DOD)
    7000 times(50%DOD)
    13 work temperaturecharge:0℃~55℃
    discharge:-20℃~60℃
    14Storage temperature-20℃~55℃Short term storage(<3 months)
    15Cell weight87.5g

     

    LFP 3800mAh 3.2v lifepo4 battery cells performance curve

    lifepo4 starter battery safety performance

    NoItemTest methodstandard
    1Over-chargeNormal cell constant current charge at 3C to 10.0 V, turn to constant voltage charge,cut off current 0.01C. observe the appearance of cell.no fire no explosion
    2Over-dischargeNormal cell constant discharge at 0.5C until the voltage to 0 V。
    observe the appearance of cell.
    no fire no explosion
    3External Short circuitAfter normal battery standard charging,short circuit + &- anodes
    (total resistance is no more than 50mΩ)terminate the test when cell temperature is lower 10℃ than peak temperature observe the appearance of cell.
    no fire no explosion
    4Thermal abuseTest the original status of battery, after the cell standard charging,put it into the baking oven,with the speed of temp(5±2℃)/min turn up to 130±2℃ and keep this 30min。observe the appearance of cell。no fire no explosion
    5FallTest the cell original capacity, then after the standard charging, test the cell original status,Drop the test battery vertically and horizontally onto the cement floor from a height of 1m (the lowest point height). do it twiceno fire no explosion
    6Heavy item shockPlace a steel rod with a diameter of 15.8mm in the middle of the fully charged battery;Then drop a 10Kg hammer from a height of 1.0m as a free falling body to the upper part of the battery.no fire no explosion
    7Crush testPut the cell between two extrusion surfaces of the equipment. The cylindrical battery axis is parallel to the extrusion surface, gradually increase the pressure to 13kN, keep the pressure for 1minno fire no explosion
    8acupuncture3mm ~ 5mm high temperature resistant steel needle, at a speed of 10mm/s ~ 40mm/s, from the direction perpendicular to the battery plate through (the needle stays in the battery).no fire no explosion

     

    LFP 3.2v lifepo4 battery 3800mAh environment characteristics

    NoItemTest methodstandard
     1Thermal cycleAfter standard charging, the battery was placed in open circuit at 75±2℃ for 48h, -20℃ for 6h, and room temperature for 24h to observe the appearance change of the battery.No leakage, no smoke, no fire, no explosion
    2steady damp heatAfter standard charging, place the battery in a constant temperature and humidity box with a temperature of 40℃±5℃ and a relative humidity of 95%. After 48 hours, take out the battery and set aside for 2h.Observe the battery appearance change.Then discharge at 0.5C to 2.5V to
    measure the final battery capacity.
    After set aside, the capacity is >90% , no obvious shape change, no corrosion, no smoke, no explosion
    3vibrationInstall the normal battery on the vibration table after standard charging. The test equipment is adjusted according to the vibration frequency and corresponding amplitude as shown in the table below. The X, Y and Z direction sweep the frequency of vibration from 10 ~ 55Hz for 30min, and the frequency sweep rate is 1OCT /min: vibration frequency /Hz displacement amplitude (single amplitude)
    A 10-30
    0.38mm
    B 30-55
    0.19mm
    test the final state of cell after sweeping frequency ,observe the appearance change of the battery.
    Residual capacity ≥ 90% nominal capacity, voltage attenuation ≤ 0.5%, no obvious damage to battery appearance, no leakage, no smoke, no explosion
    4Room temperature capacity retentionMeasure the initial state and capacity of the battery. After standard charging, the battery is left open for 30 days and the final state is measured.Discharge 0.5C to 2.5V to measure the remaining capacity of the battery;The recovery capacity of the battery is measured by discharging at 0.5C to 2.5V after standard charging.It can be recycled three times. When the standard is reached once, the standard requirements are met.Residual capacity ≥ 90% initial capacity ,recovery capacity ≥95% initial capacity

    Q :Do you provide free sample ?
    A: Yes, a few pcs free sample can be provided, but freight will be charged

    Q: what is the warranty?
    A: one year

    Q:What is your payment term ?
    A: T/T,L/C

    Q:do you accepte OEM order ?
    A: Yes,you can print yourself logo, also we can provide the design of outlook for your special battery pack

    Q :How many cells you can produce per month?
    A: 1.8million

    Q :What is the mode of transport?
    A: usually by sea

    Q:Which certificates do you have
    A:We have un38.3,MSDS…etc.

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    Chat with Lilian
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    • Lilian 10:12 AM, Today
      Dear Sir /Madam, nice to see you ,pls let me know do you need cell or pack (pls clarify LFP or LTO )
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