INR18650-2500mAh Li-ion Rechargeable cylindrical battery,High security lithium ion battery,rechargeable lithium battery,High temperature resistance lithium ion battery

2500mah Li-Ion Battery Product Details:

       NO. Items Specifications

1 Model INR18650-2500

2 Can Material Ni-Iron

3 Rated Capacity 2500 mAh（0.2C ）

Min. Capacity 2450 mAh（0.2C ）

4 Nominal Voltage 3.7V

5 Max. Charge Voltage 4.2 V

6 Discharge Cut-off Voltage 2.75V

7 Max. Charge Current 2.5 A

8 Standard Discharging Current 1.3 A

9 Max. Continuous Discharge Current 20 A

10 Max. Pulse Discharge Current 30A（ 3s pulse ）

11 Max. Diameter（include PET） ≤18.40 mm

12 Max. Height (include PET) ≤65.50mm

13 Weight (Approx.) 44.0±1.0g

14 Impedance （Max. at 1000Hz、charged status） ≤ 18 mΩ

15 Charge Method (CC/CV) Standard 0.5 C ×6hrs

Quick 1 C ×1.5hrs.

16 Operating Temperature Charge 0℃～45℃ 32oF～113oF

Discharge -20℃～60℃ -4oF～140oF

Storage -20℃～45℃ -4oF～113oF

Characteristic  for 18650 rechargeable lithium battery wholesale

Without special instructions, the following tests should be done under the condition of : temperature(23℃±3℃), atmospheric pressure (86KPa～106KPa), relative humidity (45%～85%), and the tests should be done within two

weeks after receiving the products.

the definitions of some nomenclatures of this specification 

standard Charge: Charge with current 0.2C   to limit charge voltage under the condition of23℃±3℃ surrounding temperature,then change to charge with constant voltage till the current less than or equal to 0.02C .

Safety Characteristic of 18650 High security rechargeable lithium battery

NO. Item Standard Test Method

1 Overcharge No fire、No explosion After standard charge, rest for 10mins; then charge at constant current of 3C5A to 10V.(or charge at 3C5A for 90mins). 

2 Forced discharge No fire、No explosion The battery to be discharged with standard discharging condition, Inverse charge current =1C5A；time: ≥  90mins 

3 Short Circuit test No fire、 No explosion 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. 

4 Crush test No fire、No explosion 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. 

5 Shock test No fire、No explosion 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.

6 Heating test 

       (130°C) No fire、No explosion 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. 

    7 Temperature 

 Cycling Test no leakage, no fire, no explosion 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.

The company founded in 2014, focus on producing cylindrical power lithium-ion batteries. The company supply Electric vehicle cylindrical lithium battery, which include 1500mAh, 1300mAh, 2000mAh, 2200mAh, 2500mAh, 2600mAh Li-ion battery and 3000mAh Li-ion battery. All adopt the most advanced extrusion coating production technology and yearly production reaches to 250 million Ah power type 18650 High security lithium ion battery. Our products have high quality