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CR2032 Battery Performance Test

time :2018/9/5 hits : click

The Perfoamance of the button cell CR2032 battery demand on the quality of the material and the producing process.Engineers test the CR2032 battery and share with you.



1 Scope

This specification applies to the following 3.0v lithium button cell CR2032 battery made by RISEGOODS TECH CO.,LTD.


2 Technology parameters


2.1 Model: CR2032 battery


2.2 Nominal voltage: 3.0V


2.3 Nominal capacity: 210mAh(Continuously discharged under 15kΩ load till 2.0V end-voltage at the temperature of 25℃±3℃ )


2.4 Operating temperature range: -20℃ to 60℃


2.5 Storage temerature range: <30℃


2.6 Outer dimensions: Diameter:Φ20.00-0.3mm, Height:3.200-0.2 mm


2.7 Nominal weight: 3.3g.


2.8 Structures: Manganese dioxide cathode, lithium anode, organic electrolyte, polypropylene separator and stainless steel cell can and anode cap.



3 Characteristics and test


3.1 Dimensions

Dimensions shall be me measured with instruments specified in subparagraph 4.3.The result must conform to2.6.


3.2 Off-load voltage

The samples shall be kept standing open for 24h or longer at a temperature of 25℃, and the voltage between both terminals at the same temperature shall be measured with a voltmeter specified in subparagraph 4.3. The result must conform to table 1.


3.3 On-load voltage

The samples shall be kept standing open for 24h or longer at a temperature of25℃, and the voltage between both terminals at the same temperature shall be measured with voltmeter specified in subparagraph 4.3

while a exactitude resistance value 15kΩ(including resistance throughout external circuits) is connected between both terminals at the same temperature as specified. The result must conform to table 1.


3.4 Duration

The samples shall be kept for 24h or longer at a temperature of 25℃, and shall then be continuously discharged at 25℃ under 15kΩload to 2.0V end-voltage. The result must conform to table 1.


3.5 Appearance:The appearance of batteries shall be inspected by visual means. The superficies of the cells are clean and slippery. The mark is clear. The batteries shall have no deformation, dent, stain or camber.


3.6Terminals:

The terminals have a nicer electroconductibility. There is no rust or leakage within the term of recommend use.


3.7 Leakage characteristics:

The samples shall be stored for 48hours at a temperature of 60℃ and a relative humidity of 90%, then take a view of them at a temperature of 25℃, a relative humidity of 65%±20%, there must be no leakage cells.

3.8 Storage characteristics:

The samples shall be stored for 12 month at a temperature of 25℃, a relative humidity of 65%±20%. Then the

samples shall be continuously discharged at 25℃ under 15kΩload to 2.0V end-voltage.

Self-discharging rate is to be calculated using the formula:

                                                  A1-A2

Self-discharging rate (%)= ────×100

                                               A1


A1──Average initial discharge life.

A2──Average discharge life after storage.

The result must conform to table 2.


3.9 Vibration durability:

The sample is to be subjected to simple harmonic motion with an amplitude of 0.8mm (1.6mm total maximum

excursion). The frequency is to be varied at the rate of 1 hertz per minute between 10 and 55 hertz, and return in

not less than 90 nor more than 100 minutes. The sample is to be tested in three mutually perpendicular

directions. After the test, the sample must conform to table 1.


3.10 Drop durability:

The samples are dropped ten times from a height of 1.9m onto a concrete floor. The samples are to be randomly oriented when released to obtain impacts in several positions. There is no distortion, no leakage, no explosion,no fire. The sample must conform to table 1.


3.11 Short-circuit durability :

Each test sample cell is to be short-circuited by connecting the positive and negative terminals of the battery with a minimum length of φ1.3mm2 copper wire. The battery is to discharge until it is completely discharged and the battery case temperature returned to near 55℃±2℃. There is no explosion, no fire.



4 Condition of testing

4.1 Initial Test:

Means the test begin in three months after the cell produced.


4.2 Temperature、humidity:

As for as there is no special requirement, testing should be placed under normal temperature 25℃ and Relative humidity of 60%±20%.


4.3 Test facility: 4.3.1 Outer micrometers: Instruments which tolerance shall be ±

0.02mm or below and those having equal or better accuracy shall be used.


4.3.2 DC voltmeters: Precision is 0.25 rate or better and the input resistor shall be

10MΩor more.

4.3.3 Exactitude resistance: Relative error is 0.5% or below.

4.3.4 Resistance box: Relative error is 0.5% or below.

4.3.5 Electrical drying box : Tolerance shall be ±2℃ or below.

              


                                      CR2032 Characteristics Table


       Project   Condition
Test temperature
           Characteristics
Off-load voltage    Off-load        25℃              3.05V-3.35V
         0℃              3.05V-3.35V
On-load voltage15 load after 0.8S        25℃              3.00V-3.35V
         0℃              3.00V-3.35V
Service output

Continuously discharged under   15kΩ load till 2.0V 

end-voltage

        25℃Standard
     1000h
Min value       800h
         0℃Standard       850h
Min value       680h

Service output

Continuously discharged under   1000kΩ load till 2.0V 

end-voltage

        25℃Standard
       79h
Min value       76h


Project                       Condition
        Characteristics
Thermal durablity

Kept for 48 hours at 60, then continuously

discharged under 15kΩ load till 2.0V end-voltage
Standard
    935h
Min value    748h
                                       Self-charging rate
Stored for 12 month at normal temperature,then continuously discharged under 15 load till 2.0V end voltage         Less than 10%
Stored for 24 month at normal temperature,then continuously discharged under 15 load till 2.0V end voltage


         Less than 30%


QQ图片20180905113821.png


                                   

                                    CR2032 battery charging curve


QQ图片20180905113831.png