INR18650-2600mAh Li-ion Rechargeable cylindrical battery,2600mAh Li-ion battery,18650 battery ,Long life lithium ion battery

Safety Characteristic of e-bike cylindrical power lithium-ion batteries

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.

Environment Adaptation Performance for power tool 18650 battery

NO Item Standard Test Method

1 Altitude/Low pressure simulation test no leakage, no fire, no explosion The full charged cells are to be stored for 6h at an vaccum environment with pressure of less than 11.6kPa and atemperature of 23℃±3℃.

2 Free drop test no fire, no explosion The fully charged battery drops on the concrete ground from height(1m),total 3 times,to obtain the shock of random directions.

3 Vibration test No remarkable damage/No smoking ,No explosion After standard charging, fixed the cell to vibration table and subjected to vibration cycling that the frequency is to be varied at the rate of 1Hz per minute between 10Hz and 55Hz,the excursion of the vibration is 1.52mm. The cell shall be vibrated for 90 minutes per axis of x, y axes.

Storage Temperature for Shipping

If the cell is kept as ex-factory status (50% of charge), the 0.2C recoverable capacity rate is more than 80%.

1 month-20°C ~ 60 °C

2 months  -20°C ~ 40 °C

3 months-20℃~ 25 °C

Appearance

There shall be no such defect as deep scratch, flaw, crack, rust, leakage, which may adversely affect commercial value of the cell.

Package

The cells are packed with JIANGSU SUNPOWER CO.,LTD. standard carton box, which hold four inner boxes. There are 100pcs 18650 cells per inner box. And the inner box and outer box identifies battery capacity, voltage and impedance information.

Warnings and Cautions in Using the Long life rechargeable lithium battery  

To prevent a possibility of the battery from leaking, heating or explosion please observe the following precautions:

● When using a new battery for the first time or after long term storage, please use the battery charger specifically for that purpose fully charge the battery before use. 

● Do not disassemble or open, crush, bend or deform, puncture,