Samsung INR18650-25R Specifications
18650 · NMC — full datasheet specs for the Samsung INR18650-25R, plus what it delivers in common DIY pack configurations. Plan a build with it in the Battery Pack Calculator.
At 2500 mAh it ranks #62 of 165 18650 cells in our database by capacity — a mid-capacity 18650 options.
Full specifications
| Capacity | 2500 mAh |
|---|---|
| Nominal voltage | 3.6 V |
| Max charge voltage | 4.2 V |
| Discharge cutoff | 2.5 V |
| Energy | 9 Wh |
| Internal resistance | 18 mΩ |
| Standard charge current | 1250 mA |
| Standard discharge current | 500mA |
| Chemistry | NMC |
| Form factor | 18650 |
| Wrap color | Green |
| Insulator ring | White |
At the standard 1250 mA charge rate, a full charge takes roughly 2 hours plus the constant-voltage taper at the end.
The INR18650-25R in a battery pack
Common DIY series configurations using this cell's real 3.6V nominal voltage, with a 3-cells-in-parallel (3P) example for capacity:
| Config | Nominal voltage | Fully charged | Cells (3P) | Capacity (3P) | Energy (3P) | |
|---|---|---|---|---|---|---|
| 3S | 10.8 V | 12.6 V | 9 | 7.5 Ah | 81 Wh | cell count guide |
| 7S | 25.2 V | 29.4 V | 21 | 7.5 Ah | 189 Wh | cell count guide |
| 10S | 36 V | 42 V | 30 | 7.5 Ah | 270 Wh | cell count guide |
| 13S | 46.8 V | 54.6 V | 39 | 7.5 Ah | 351 Wh | cell count guide |
| 14S | 50.4 V | 58.8 V | 42 | 7.5 Ah | 378 Wh | cell count guide |
Size a full pack around the INR18650-25R — voltage, capacity, runtime, and BMS:
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Specs come from manufacturer datasheets and independent testing; Mooch-tested discharge ratings are shown when available because they reflect real continuous performance better than headline datasheet numbers. Browse the full 18650 & 21700 cell database to compare every cell.