Samsung ICR18650-26F SPECIFICATION

-SAMSUNG SDI Confidential Proprietary –

Spec. No.

ICR18650-26F Version No.

0.0

SPECIFICATION OF PRODUCT

SPECIFICATION OF PRODUCTSPECIFICATION OF PRODUCT

for Lithium-ion Rechargeable Cell

Model : ICR18650-26F

May, 2009

Samsung SDI Co.,Ltd.

Energy Business Division

0

-SAMSUNG SDI Confidential Proprietary –

CV

mA

*)

Spec. No.

1. Scope

This product specification has been prepared to specify the rechargeable lithium-ion cell

('cell') to be supplied to the customer by Samsung SDI Co., Ltd.

2. Description and Model

2.1 Description Cell (lithium-ion rechargeable cell)

2.2 Model ICR18650-26F

3. Nominal Specifications

3.1 Nominal Capacity

3.2 Minimum Capacity 2550mAh(0.2C, 2.75V discharge)

3.3 Charging Voltage

ICR18650-26F Version No.

Item Specification

0.0

2600mAh (0.2C, 2.75V discharge)

4.2 ±0.05 V

3.4 Nominal Voltage

3.5 Charging Method

3.6 Charging Current

3.7 Charging Time

3.8 Max. Charge Current

3.9 Max. Discharge Current

3.10 Discharge Cut-off Voltage

3.11 Cell Weight

3.12 Cell Dimension

3.13 Operating Temperature

3.14 Storage Temperature

3.7V

CC-

(constant voltage with limited current)

Standard charge: 1300 Rapid charge : 2600mA

Standard charge : 3hours

Rapid charge : 2.5hours

2600mA(ambient temperature 25℃)

5200mA(ambient temperature 25℃)

2.75V

47.0g max

Height : 65.00mm max

Diameter : 18.40mm max

Charge : 0 to 45

Discharge: -20 to 60

1 year : -20~25℃(1*)

3 months : -20~45℃(1

1 month : -20~60℃(1*)

℃

Note (1): If the cell is kept as ex-factory status (50% of charge),

the capacity recovery rate is more than 80%.

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-SAMSUNG SDI Confidential Proprietary –

Spec. No.

ICR18650-26F Version No.

0.0

4. Outline Dimensions See the attachment (Fig. 1)

5. Appearance

There shall be no such defects as scratch, rust, discoloration, leakage which may adversely affect commercial value of the cell.

6. Standard Test Conditions

6.1 Environmental Conditions Unless otherwise specified, all tests stated in this specification are conducted at temperature 25±5℃ and humidity 65±20%.

6.2 Measuring Equipment (1) Ammeter and Voltmeter The ammeter and voltmeter should have an accuracy of the grade 0.5 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.

7. Characteristics

7.1 Standard Charge This "Standard Charge" means charging the cell with charge current

1300mA and constant voltage 4.2V at 25℃ for 3hours.

7.2 Standard Discharge Capacity The standard discharge capacity is the initial discharge capacity of the cell, which is

measured with discharge current of 520mA with 2.75V cut-off at 25℃ within 1hour after the standard charge.

Standard Discharge Capacity ≥ 2550mAh

7.3 Initial internal impedance Initial internal impedance measured at AC 1kHz after rated charge.

Initial internal impedance ≤ 100mΩ

7.4 Temperature Dependence of Discharge Capacity

Capacity comparison at each temperature, measured with discharge

constant current 520mA and 2.75V cut-off after the standard charge is as follows.

Charge Temperature Discharge temperature

25℃ -10℃ 0℃ 25℃ 40℃

Relative Capacity 50% 80% 100% 80%

Note: If charge temperature and discharge temperature is not the same,

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Spec. No.

ICR18650-26F Version No.

0.0

the interval for temperature change is 3 hours. Percentage as an index of the capacity at 25℃(=2550mAh) is 100%.

7.5 Temperature Dependence of Charge Capacity

Capacity comparison at each temperature, measured with discharge constant current

520mA and 2.75V cut-off after the standard charge is as follows.

Charge temperature Discharge temperature

0℃ 25℃ 45℃

25℃

Relative Capacity

80% 100% 80%

Note: If charge temperature and discharge temperature is not the same, the interval for temperature change is 3 hours.

Percentage as an index of the capacity at 25℃(=2550mAh) is 100%.

7.6 Charge Rate Capabilities

Discharge capacity is measured with constant current 520mA and 2.75V cut-off after the cell is charged with 4.2V as follows.

Charge Condition

Current

0.2C

(520mA)

0.5C

(1300mA)

1.0C

(2600mA)

2.0C

(5200mA)

Cut-off 7h or 0.05C 2.5h or 0.05C 2.5h or 0.05C 2.5h or 0.05C

Relative

Capacity

100% 95% 90% 80%

Note: Percentage as an index of the capacity at 25℃(=2550mAh) is 100%.

7.7 Discharge Rate Capabilities

Discharge capacity is measured with the various currents in under table and 2.75V cut-off after the standard charge.

Discharge Condition

Current

Relative

Capacity

0.2C

(520mA)

100% 95% 90% 80%

0.5C

(1300mA)

1.0C

(2600mA)

2.0C

(5200mA)

Note: Percentage as an index of the capacity at 25℃(=2550mAh) is 100%.

7.8 Cycle Life Each cycle is an interval between the charge (charge current 1300mA)

3

with 2.5h or

-SAMSUNG SDI Confidential Proprietary –

Spec. No.

ICR18650-26F Version No.

0.0

0.05C cut-off and the discharge (discharge current 1500mA) with 2.75V cut-off.

Capacity after 299cycles and plus 1 day, measured under the same condition in 7.2 Capacity ≥ 1785mAh(70% of the capacity at 25℃)

7.9 Storage Characteristics Capacity after storage for 30days at 25℃ from the standard charge, measured with discharge current 1300mA with 2.75V cut-off at 25℃.

Capacity retention(after the storage) ≥ 2040mAh (80% of the capacity at 25℃)

7.10 Status of the cell as of ex-factory

The cell should be shipped in 50% charged state. In this case, OCV is from 3.65V to

3.85V.

8. Mechanical Characteristics

8.1 Drop Test

Test method: Cell(as of shipment or full charged) drop onto the oak-board

(thickness: ≥30mm) from 1.5m height at a random direction 6 times.

Criteria: No leakage

8.2 Vibration Test Test method: Cell(as of shipment) is vibrated along 2 mutually perpendicular axes with total excursion of 1.6mm and with frequency cycling between 10Hz and 55Hz by 1Hz/min.

Criteria: No leakage

9. Safety

9.1 Overcharge Test Test method: To charge the standard charged cell with 12V and 2.6A at 25℃ for 2.5 hours. Criteria: No fire, and no explosion.

9.2 External Short-circuit Test Test method: To short-circuit the standard charged cell by connecting positive and negative terminal by less than 50mΩ wire for 3hours. Criteria: No fire, and no explosion.

9.3 Reverse Charge Test

Test method: To charge the standard charged cell with charge current 2.6A

By –12V for 2.5 hours.

Criteria: No fire, and no explosion.

9.4 Heating Test

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