Shenzhen Hailei New Energy Co.,LTD is the most completed variety of battery pack manufacturers in China

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18650 -1S2P
18650 -1S2P memory effect; 2. lead free, no harm; 3.high energy density, low internal resistance; 4. excellent safety performance, no explosion, no fire; 5. can be flexibly made into battery packs with different voltages, capacities, and size; 6.long cycle life, after 500cycles continuously discharging, 70% of nominal capacity remaining; 7.wide application range: notebook, interphone, portable DVD, instrument and meter, stereo system, electric torch, video camera, etc.
  • Details
  • Nominal Voltage: 3.7v
  • Capacity:4400mah
  • Place of Origin:Guangdong, China (Mainland)
  • Size: 19mm*38mm*65mm
  • PVC color:blue, or other customized color
  • application:power bank, cash counter, time recorder, electric torch, etc.
  • Certification :IEC62133/ UL /UN38.3 /MSDS/2006/66/EC /REACH
  • Model Number: 18650-2p
  • operating temperature:-20℃~60℃
  • warrenty:1 year
    • Details ;
    • Place of Origin::Guangdong, China (Mainland)

    • Brand Name: :HAILEI

    • Model Number: :HL-LIR18650-4400mah

    • Type: :Li-Ion

    • Nominal Voltage: :3.7V

    • Nominal Capacity: :4400mAh

    • Operating Temperature: :-20℃~60℃

    • Warranty: :1 years

    • Application: :GPS tracker, power bank, cash counter, time recorder, etc.

    • Certification: :CE, ROHS, UL, UN38.3, SGS, MSDS, IEC62133, etc.

    GSP052030 3.7V Rechargeable Polymer Li-ion Battery detail specs as follows:    

    Model: HL-LIR18650-3.7V-4400mAh
    Nominal voltage: 3.7V
    Nominal capacity: 4400mAh
    Charge current: 0.5C
    Discharge current: 1C
    Weight: 90g/pc
    Cycle life: 500 times
    With PCB/PCM and wires

    Product Description

    GSP052030 3.7V 250mAh Rechargeable Polymer Li-ion Battery

    No. Items Specifications Remark
    1 Voltage 3.7V LIR18650 4400mah 3.7V Rechargeable  Li-ion Battery


    Nominal Capacity: 4400mAh

    0.2C Standard discharge


    Minimum Capacity: 4400mAh


    Charge Voltage


    By standard charge method

    4 Discharge Cut-off Voltage  3.0V  

    Standard charging method

    0.2C constant current,4.2V constant voltage charge to 4.2V,continue charging till current decline to 0.01C  

    Charge current


    Standard charge, charge time:6.5h(Ref)

        0.3C Rapid Charge, charge time:5.5h(Ref)
    7 Standard discharging method 0.2C constant current discharge to 3.0V,  

    Cell Internal Impedance


    Internal resistance measured at AC 1KHafter 50% charge


    Maximum charge current


    For continuous charging mod


    Maximum discharge current


    For continuous discharge mod


    Operation Temperature and relative humidity Range

    Charge: 0~60℃ 60±25%R.H.  

    Charge at a very low temperature such as blew 0,will be get a lower capacity and reduce cycle life of the battery

        Discharge: -10~80℃ 60±25%R.H.

    Storage temperature for a long time


    Do not storage exceed half year. Must charge once when storage for half year. Must charge the battery which with protect circuit when storage for three mouths.

    13 Allow swellingThickness 10% of Initial Thickness  

    Rated Capacity at 0.2C(Min.)

    After standard charge, the capacity shall be measured on 0.2C discharge till the voltage discharge to 3.0V,


    Rated Capacity at0.5C(Min.)

    After standard charge, the capacity shall be measured on 0.5C discharge till the voltage discharge to 3.0V,

    Retention capacity



    Rated Capacity at 1C(Min.)

    Charging and discharging battery as blew conditions

    0.2C standard charge to 4.2V end-off

    0.2C standard discharge to 3.0V cut-off

    Continuous charge and discharge for 500 cycles, the capacity will be measure after the 500th cycle

     70% of initial capacity
    Packaging & Delivery

    LIR18650 1S2P 3.7V 4400mAh Rechargeable  Li-ion Battery

    Packaging Details: Standard packing according to the international airway regulation
    Delivery Detail: 10 days once order confirmed. 

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