SPECIFICATION OF PRODUCT
for Lithium-ion rechargeable cell
Model name : INR18650-20R M
Feb. 4, 2014
Samsung SDI Co., Ltd.
Cell Business Division
Revision history
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 lithium-ion rechargeable cell
2.2 Model name INR18650-20R M
3. Nominal specifications
the capacity recovery rate is more than 90% of 10A discharge capacity
100% is 1,950mAh at 25℃with SOC 100% after formation.
4. Outline dimensions
See the attachment (Fig. 1)
Fig.1. Outline dimensions of INR18650-20R
Unit : mm With tube
18.33±0.07
64.85± 0.15
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) Amp-meter and volt-meter
The amp-meter and volt-meter should have an accuracy of the grade 0.5mA and
mV 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 CCCV with charge current 0.5CmA
(1,000mA), constant voltage 4.2V and 100mA cut-off in CV mode at 25℃for capacity.
.
7.2 Rapid charge
Rapid charge means charging the cell CCCV with charge current 4A and 100mA cut-off at 25℃
7.3 Nominal discharge capacity
The standard discharge capacity is the initial discharge capacity of the cell, which is
measured with discharge current of 400mA(0.2C) with 2.5V cut-off at 25℃within 1hour after the standard charge.
Nominal discharge capacity ≥2,000mAh
Which complying to the minimum capacity of IEC61960 standard.
7.4 Standard rated discharge capacity
The standard rated discharge is the discharge capacity of the cell, which is measured with discharge current of 10A with 2.5V cut-off at 25℃within 1hour after the standard charge.
Standard rated discharge capacity ≥1,950mAh
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