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| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Manufacturer | Misen | Model | INR2170-50D2 |
| Cell type | Cylindrical rechargeable lithium-ion cell | Nominal voltage | 3.6V |
| Typical capacity | 5000mAh | Rated minimum capacity | 4950mAh; standard charge and discharge at 25°C |
| Typical energy | 18.00Wh | Rated energy | 17.82Wh |
| Standard charge | 2.475A CC to 4.2V, then CV to 100mA at 25 ± 2°C | Maximum charge current | 15A |
| Standard discharge | 0.99A to 2.5V at 25 ± 2°C | Maximum discharge current | 60A with 80°C cell-surface temperature cut-off |
| Normal voltage limits | 4.2V charge limit; 2.5V standard discharge end voltage | AC internal resistance | ≤5mΩ at 1000Hz |
| Operating temperature | Charge: 0–45°C; discharge: −20–60°C | Maximum cell-surface temperature | 60°C during charge; 80°C during discharge |
| Dimensions with sleeve | Diameter ≤21.45mm; height ≤70.75mm | Weight | ≤69g |
| Cycle test | ≥2970mAh after 600 cycles; 8A charge / 40A discharge at 25 ± 2°C | Shipment voltage | 3.40–3.60V |
| Specification reference | P/PR03/PB-D-INR2170-50D2-ZZ, A/00, 2026-03-20 | Product form | Bare cell requiring pack-level protection |
The BAK INR2170-50D2 is a 3.6V cylindrical rechargeable lithium-ion cell made by Zhengzhou BAK Battery Co., Ltd. Its manufacturer specification distinguishes 5000mAh typical capacity from 4950mAh rated minimum capacity, corresponding to 18.00Wh typical and 17.82Wh rated energy. The document lists 15A maximum charge and 60A maximum discharge with an 80°C cell-surface cut-off. MisenBattery can supply the cell and support protected custom pack integration after the application's electrical and thermal profile has been reviewed.
The 5000mAh figure is typical capacity, while 4950mAh is the rated minimum under the manufacturer's standard charge and discharge procedure at 25°C. BAK pairs these values with 18.00Wh typical and 17.82Wh rated energy at 3.6V nominal. This distinction gives pack designers a clearer basis for capacity estimates and cell acceptance criteria.
The specified maximum discharge current is 60A with a cell-surface temperature cut-off at 80°C. It must be applied together with thermal monitoring and the relevant current profile for the operating temperature. In a separate 25 ± 2°C rate test, the 40A discharge capacity is at least 95% of the 10A reference result under the stated procedure.
Standard charging uses 2.475A constant current to 4.2V, followed by constant-voltage charging until current falls to 100mA at 25 ± 2°C. The listed maximum charge current is 15A. Charging is specified within 0–45°C ambient operating conditions, while cell-surface temperature during charging must not exceed 60°C.
The manufacturer's drawing gives a maximum diameter of 21.45mm and maximum height of 70.75mm with the sleeve fitted. Cell weight is no more than 69g. These maximum dimensions support holder and enclosure planning, but an assembled pack also needs space for welded interconnects, electrical insulation, thermal sensing and manufacturing tolerances.
After 600 cycles at 25 ± 2°C, the specification requires at least 2970mAh, equal to 60% of rated capacity. The test charges at 8A to 4.2V with a 100mA termination current and discharges at 40A to 2.5V with an 80°C temperature cut-off. Service life under other profiles can differ.
AC internal resistance is specified at no more than 5mΩ using a 1000Hz measurement. The specified shipment voltage is 3.40–3.60V, which is also the stated voltage range for long-term storage. These are distinct checks for incoming inspection and storage planning; actual capacity remaining after shipment depends on storage time and conditions.
Custom battery pack applications: MisenBattery supplies BAK cells and supports custom pack integration for appropriately assessed portable power or mobility equipment. A finished pack needs a compatible BMS, fuse protection, welded interconnects, temperature sensing, insulation and suitable thermal and mechanical design. BAK prohibits direct soldering to the cell and requires its specific current and voltage profiles for different operating temperatures. Request applicable product and shipment documentation for the supplied batch.
