INR21700-50E Samsung 50E2 21700 5000mAh Lithium-ion Cells

1. Scope
This product specification has been prepared to specify the rechargeable lithium-ion cell (“Cell” or “Cells”) 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 INR21700-50E2
2.3 Site Manufactured in Korea or China
3. Nominal Specifications
3.1 Standard discharge Capacity Min 4,900mAh
- Charge : 0.5C(2,450mA), 4.2V, 0.02C(98mA) cutoff @ RT
- Discharge : 0.2C(980mA), 2.5V cutoff @ RT
3.2 Rated discharge Capacity Min 4,753mAh
- Charge : 0.5C(2,450mA), 4.2V, 0.02C(98mA) cutoff @ RT
- Discharge : 1C(4,900mA), 2.5V cutoff @ RT
3.3 Charging Voltage 4.2V
3.4 Nominal Voltage 3.63V
3.5 Charging Method CC-CV (constant voltage with limited current)
3.6 Charging Current Standard charge : 2,450mA
3.7 Charging Time Standard charge : 4hours
3.8 Max. Charge Current 4,900mA (not for cycle life)
3.9 Max. Discharge Current
9,800mA (for continuous discharge)
14,700mA (not for continuous discharge)
3.10 Discharge Cut-off Voltage 2.5V
3.11 Cycle life
Capacity ≥ 3,802mAh @ after 500cycles
(80% of the Rated Discharge Capacity @ RT)
- Charge : 0.5C(2,450mA), 4.2V, CCCV 0.05C(245mA) cut-off @ RT
- Discharge: 1C(4,900mA), 2.5V cut-off @ RT
3.13 Recovery characteristics
Capacity recovery (after the storage) ≥ 4,410mAh
(90% of the Standard discharge capacity @ RT)
- Charge : 0.5C(2,450mA), 4.2V, 0.02C(98mA) cutoff @ RT
- Storage : 20 days @ 60’C
- Discharge : 0.2C(980mA) 2.50V cut-off @ RT
3.14 Cell Weight 69.5g max
3.15 Cell Dimension
Cell height : Max.70.80mm
Top Diameter : Φ Max.21.25mm