EN

Stock Code

(300438)

Guangzhou Great Power Energy & Technology CO., LTD.

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TWS Earphone Coin Cell

Competitiveness of GP Coin Cell


  • Structure Design

    Structure with high security and efficient use of space makes cell capacity higher than domestic peer corporation.


  • Material Selection

    Advanced materials technology platform satisfies the requirements of 3~5C fast charge and 4.35V high voltage performance.


  • Production Capacity

     Production capacity of 13000 pcs/day can meet the demand of big deals.


  • Automatic Equipment

    Advanced automatic production from large-scale screw feeder system to fully automatic screening system in packaging can ensure product consistency effectively


  • Advanced Quality Management System

     The mature supporting TS16949 system helps quality control of products throughout the whole process.


  • Manufacturing Traceability System

    A smart factory's information platform capable of human-machine collaboration can realize real-time quality data collection through the production process, in-time control and post hoc analysis.



Six Patents of GP Coin Cell


Patent 1 (A coin cell case structure, coin cell and electrical equipment)

 This patent is undergoing PCT process followed by entering the relevant countries for product sales.


Patent 2 (A coin lith-ion cell positive case)

The patent is to prevent the cell from bulging, deforming and corroding positive case.


Patent 3 (A coin lith-ion cell negative case)

The is the first patent in China to use a two-piece component to make coin lith-ion cell. Vatar uses a three-piece component.


Patent 4 (A method for producing coin lith-ion cell having thick electrode)

This is China's first patent with electrode thickness greater than 0.2 mm


Patent 5 (A Li-MnO2  rechargable coin cell negative case and cell)

This is the first Li-MnO2 rechargable coin cell patent in China


Patent 6 (A coin lith-ion cell )

This is the earliest laminated coin lith-ion cell patent in China



Coin Cell Capacity/day

Unit:1000pcs

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Since 2016, GP and Harman have jointly developed coin cell, and since 2017 it has achieved scale production. There has been 20million sales volume so far.


TWS Earphone Clients

TWS Earphone Coin Cell


Currently, the major client base of GP includes Harman, TCL, Sinocare etc. Especially we are the exclusive supplier of Harman Tws earbuds cells that gain excellent market feedback for stable and fine quality. 



Strategic Partner


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The main battery supplier of bluetooth speakers, TWS earphones



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All-round Cooperation

The main battery supplier of Mi TWS earphones,  lamps, electric toothbrushes, etc. 




Products Description

Model

ICR1254

ICR1265

ICR1454

ICR1654

ICR9440

ICR1054

ICR1240

ICR1440

Nominal Voltage(V)

3.7V

3.7V

3.7V

3.7V

3.7V

3.7V

3.7V

3.7V

AC/IR (mΩ)

≤550

≤500

≤500

≤450

≤1000

≤700

≤700

≤600

Capacity(C3)(mAh)

60

70

85

110

25

35

45

50

Continuous Discharge

1C

Continuous Charge.

2C

Cycle life

>500Times

Workable temperature

Charge(℃)

0 to 45℃

Workable temperature

Discharge(℃)

-20 to 60℃


Size


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Model

Diameter D/mm

Height H/mm

ICR7842

7.8±0.1

4.5±0.15

ICR9440

9.4±0.1

4.2±0.15

ICR1054

10.0±0.1

5.6±0.15

ICR1240

12.0±0.1

4.2±0.15

ICR1254

12.0±0.1

5.6±0.15

ICR12540

12.1±0.1

5.7±0.15

ICR1265

12.0±0.1

6.5±0.15

ICR1440

14.0±0.1

4.2±0.15

ICR1454

14.0±0.1

5.6±0.15

ICR14540

14.1±0.1

5.7±0.15

ICR1654

16.0±0.1

5.6±0.15

ICR16540

16.1±0.1

5.7±0.15



Coin Cell Safty Performance



Item

Environmental tests

Reliability Testing Result

Standard

Final Result

1

Short Circuit Test@general Temprature

No fire,no explosion, surface tempraure 150℃

GB31241

Pass

 2

Short Circuit Test@ 55°C

No fire,no explosion, surface tempraure 150℃

GB31241

Pass

 3

Over Charge(3C/4.6V

No fire,no explosion

GB31241

Pass

4

Over Discharge

No fire,no explosion

GB31241

Pass

5

Crush Test

No fire,no explosion

GB31241

Pass

6

Impact Test

No fire,no explosion

GB31241

Pass

7

Vibration Test

No fire,no explosion

GB31241

Pass

8

Drop Test

No leak,  no fire,no explosion

GB31241

Pass

9

Heating Test 130°

No fire,no explosion

GB31241

Pass

 10

Temperature Cycling Test

No smoke,  no fire,no explosion

GB31241

Pass


ICR12540-60mAh Self-discharge Perfarmance


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est results of full charged ICR12540-60mAh

for 7-day storage time at 60°C  


retention rate

%

coverage rate

%

voltage change rate

%

internal resistence change rate

%

87.7%

102.0%

1.0%

9.1%


The voltage remains above 3.9V for long storage time at room temperature.



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