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| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Model | INR18650-25R | Manufacturer | misenpower |
| Product Version | Version 8, specification version 1.0 | Manufacturing Sites | Korea, Malaysia and China |
| Cell Chemistry | Rechargeable lithium-ion, INR | Cell Format | 18650 cylindrical bare cell, flat top |
| Nominal Voltage | 3.70V | Nominal Capacity | 2500mAh |
| Typical Capacity | 2500mAh at 500mA discharge to 2.50V | Rated Discharge Capacity | ≥2450mAh at 10A discharge to 2.50V |
| Nominal Energy | Approx. 9.25Wh, calculated from 3.7V × 2.5Ah | Initial AC Impedance | ≤18mΩ, measured at 1kHz after standard charge |
| Standard Charge | CC-CV, 1.25A to 4.20V; 125mA cut-off | Rated Charge | CC-CV, 4A to 4.20V; 100mA cut-off |
| Charging Time | Standard: 180min; rated: 60min at room temperature | Discharge Cut-off Voltage | 2.50V |
| Continuous Discharge | 20A without temperature cut | Temperature-Controlled Discharge | 30A only with an 80°C cell-surface temperature cut |
| Cycle-Life Specification | ≥1500mAh after 250 cycles with 4A charge and 20A discharge | Cell Weight | 45.0g maximum |
| Cell Dimensions | Diameter: 18.40mm max.; height: 65.00mm max., with sleeve | Ambient Operating Range | Charge: 0°C to 45°C; discharge: -20°C to 60°C |
| Ex-Factory Voltage | 3.53V to 3.60V; approximately 30% state of charge | Storage for ≥80% Recovery | 1 year: -20°C to 23°C; 3 months: -20°C to 45°C; 1 month: -20°C to 60°C |
The Samsung SDI INR18650-25R Version 8 is a high-drain rechargeable lithium-ion cell combining 2500mAh nominal capacity with a standard 20A continuous-discharge rating. Its 3.7V nominal voltage, low initial impedance and established 18650 dimensions support professionally engineered power-tool and industrial battery packs. A conditional 30A operating mode is available only when cell-surface temperature is actively limited to 80°C.
The cell provides 2500mAh typical and nominal capacity under the specified test conditions. Its rated discharge capacity is at least 2450mAh when discharged at 10A to 2.50V, demonstrating useful capacity retention under substantially higher current than the 500mA standard-capacity test.
Samsung SDI specifies 20A continuous discharge without a temperature cut. Datasheet testing indicates approximately 95% relative capacity at 20A compared with the 10A rated-capacity reference. Actual pack current must account for cell temperature, ageing, interconnect resistance, cooling performance and current sharing between parallel cells.
A 30A discharge mode is listed only when an 80°C cell-surface temperature cut-off is implemented. This conditional limit requires correctly positioned temperature sensing and immediate current interruption. It must not be presented as an unrestricted continuous rating or as a pulse-discharge specification.
Standard CC-CV charging uses 1.25A, 4.20V and a 125mA termination current, with a stated charging time of approximately 180 minutes. Rated charging uses 4A and a 100mA cut-off for approximately 60-minute charging at room temperature under controlled test conditions.
Initial internal impedance is specified at no more than 18mΩ when measured at AC 1kHz after standard charging. Low cell impedance supports reduced voltage sag and heat generation during high-current operation, although complete pack resistance also depends on welds, busbars, wiring, protection devices and connectors.
Samsung specifies voltage monitoring, over-temperature and over-current warnings, secondary protection, welded cell connections and more than 1mm recommended spacing between cells. The green-sleeved flat-top cell is intended for integration into protected battery assemblies and is not designed for individual consumer, vape or e-cigarette use.
Custom battery pack applications: Suitable applications include cordless power tools, professional cleaning equipment, portable industrial machinery and other high-current systems with validated load and thermal requirements. MisenBattery supplies Samsung SDI cells and supports custom pack integration using a matched BMS, fuse protection, welded interconnects, cell-block voltage and temperature sensing, insulation, more than 1mm cell spacing, and suitable thermal and mechanical protection. Supporting CE, UN38.3, RoHS and UL documentation can be provided for the applicable product and shipment.
