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Description
INR18650-2000mAh battery,2200mAh Li-ion battery manufacturer,lithium ion battery for vacuum cleaner,High security lithium ion battery
2000mAh Li-ion cylindrical battery Product Details:
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NO.
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Items
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Specifications
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1
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Model
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20P1 (INR18650-2000)
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2
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Can Material
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Ni-Iron
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3
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Min Capacity
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1950 mAh（0.2C）
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4
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Nominal Voltage
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3.7V
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5
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Max. Charge Voltage
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4.2 V
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6
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Discharge Cut-off Voltage
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2.750V
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7
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Max. Charge Current
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4A
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8
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Max. Continuous Discharge Current
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20 A
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9
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Max. Pulse Discharge Current
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30A（ 2s pulse ）
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10
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Max. Diameter（include PET）
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18.4±0.05 mm
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11
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Max. Height (include PET)
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65.25±0.15mm
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12
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Weight (Approx.)
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43.0g
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13
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Impedance （Max. at 1000Hz、charged status）
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15±3mΩ
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14
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Pack consistency
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△Voltage △Impedance △Capacity
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15
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Charge Method (CC/CV)
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Standard
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0.5 C×3 hrs.
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Quick
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2C×1.0 hrs.
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16
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Operating temperature (surface temperature)
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Charge
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0℃～45℃
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Discharge
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-20℃～75℃
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Storage
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-20℃～45℃
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Characteristic of High security lithium ion battery
a. Environmental conditions
Unless otherwise specified, all tests stated in this specification are conducted at temperature 23±3°and humidity under 65%.
b. Measuring equipment
(1) Amp-meter and volt-meter
The amp-meter and volt-meter should have an accuracy of the grade 0.5mA and mV or higher.
(2) Slide caliper
The slide caliper should have 0.01 mm scale.
(3) Impedance meter
The impedance meter with AC 1kHz should be used.
c. Standard charge
Charging the cell CCCV with charge current 0.5C, constant voltage 4.2V and 100mA cut-off in CV mode at
23℃for capacity.
d. Standard discharge capacity
Discharge current of 400mA (0.2C) with 2.5V cut-off at 23℃within 1hour after the standard charge.
Electrical Characteristic for High temperature resistance lithium ion battery
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NO.
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Item
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Standard
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Test Method
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1
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Discharge rate capabilities
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A）1 C ≥97% B）5 C ≥95% B）10 C ≥95%
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Standard charged under the condition of normal atmospheric pressure and the environmental temperature of 23℃±3℃ and45%～85%RH, then rest for 30mins and discharge at1C、5 C 、10C to the discharge cut-off voltage respectively. Charge/discharge cycle can be conducted for 3 times beforemeeting the Standards（the same below）
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2
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capacity retention and recovery
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Residual capacity≥94%Recoverable capacity≥*98%
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Standard charged under the condition of normal atmospheric pressure and the environmental temperature of 23℃±3℃，Stored for 28 days, then discharge at 0.2 C to 2.75V measuring residual capacity; Then standard charge/discharge measure recoverable capacity.
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3
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Low TemperaturePerformance
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discharge capacity≥85% rated capacityno distortion and no rupture
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The cell shall be charged in accordance with the standard charge. Then stored in the temperature of -10℃±1℃ for4h, Discharge at the constant current of 0.2C down to the end-of-discharge voltage 2.50V.
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4
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Cycle Life
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2A charge/ 10Adischarge≥500cycles4A charge/ 20Adischarge≥200cycles
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Charge: The cell shall be charged in accordance with2A(4A)Charge condition and the end-of-charge voltage is4.15V. rest for 30mins.Discharge：10A discharge to 2.75V, one cycle is finished, rest for 60mins. Then repeat above steps, when capacity is lessthan 70% of initial capacity, the battery life is over. Discharge：20A discharge to 2.75V, one cycle is finished, rest for 60mins. Then repeat above steps, when capacity is lessthan 70% of initial capacity, the battery life is over.
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Safety Characteristic for 2000mAh Li-ion battery supplier
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NO.
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Item
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Standard
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Test Method
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1
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Overcharge
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No fire、No explosion
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After standard charge, rest for 10mins; then charge at constant current of 3C5A to 10V.(or charge at 3C5A for 90mins).
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2
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Forced discharge
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No fire、No explosion
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The battery to be discharged with standard discharging condition, Inverse charge current =1C5A；time: ≥ 90mins
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3
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Short Circuit test
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No fire、 No explosion
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The battery to be fully charged with standard charging condition, and short the positive and negative terminals
with wire resistance ≤50mΩ.Tests are to be conducted at 23℃±3℃ and at 55℃ ±5℃, keep 24h or case temperature decline to 20% of the max temperature ,test is over.
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4
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Crush test
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No fire、No explosion
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A battery is crushed between two flat surfaces. The applied force is 13 kN±1kN by hydrocylinder, Once the maximum pressure has been obtained or voltage decrease to 1/3 of nominal voltage sharply, then release pressure.
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5
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Shock test
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No fire、No explosion
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The full charged battery is fixed on shock table, to force a certain shock to three mutual vertical direction, in initial 3ms, the min. average acceleration is 75gn,the peak acceleration is between 125gn and 175gn.
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6
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Heating test
(130°C)
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No fire、No explosion
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The cells are fully charged with standard charging condition, and put into incubator with nature air or cycled air convected, heat battery by velocity of 5°C ±2°C/min to 130°C±2°C,and maintain for 10mins.
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7
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Temperature
Cycling Test
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no leakage, no fire, no explosion
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The fully charged batteries are placed in a test chamber and subjected to the following cycles: a) Raising the temperature to 75°C ±2°C within 30 minutes and maintaining this temperature for 6 hours. b) Reducing the temperature to minus 40°C ±2°C within 30 minutes and maintaining this temperature for 6 hours. c) Repeating the sequence for a further 9 cycles. d) After the 10th cycle, storing the batteries for 24 hours prior to examination.
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Company products are positioned in the field of power type lithium ion battery. Discharge rate is 3 to 10 times of ordinary batteries; cycle life reaches to more than 3000 times under the condition of 0.3C charge-discharge and more than 400-1000 times under the condition of high-rate 5 to 10C, and has high security and consistency. 18650 cylindrical power lithium-ion batteries are widely used in electric vehicles, electric bicycles, low-speed vehicles, electric tools, household vacuum cleaner, model aeromodelling, military industry and other fields.
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