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Samsung INR18650-25R is a 2500mAh lithium-ion battery cell designed for high-drain devices, offering a continuous discharge current of 20A. With excellent performance, stability, and long cycle life, the 25R is widely used in e-bikes, power tools, and custom lithium battery packs.
Custom Lithium Battery
The Samsung 25R is one of the most reliable and widely used 18650 lithium-ion cells in the market, offering an outstanding balance between capacity (2500mAh)
and high discharge performance (20A). Engineered by Samsung SDI, this cell is designed to deliver power, stability, and safety for demanding applications such as
electric bicycles, scooters, and power tools.
The 25R’s chemistry (LiNiMnCoO₂ – NMC) provides high energy density with low internal resistance, enabling efficient energy delivery and minimal heat generation.
It’s a preferred choice for both OEM manufacturers and custom battery pack builders, thanks to its proven reliability and consistent quality.
| SPECIFICATION | DETAILS |
| Brand | Samsung |
| Model | 25R |
| Battery Type | 18650 |
| Capacity | 2500mAh |
| Nominal Voltage | 3.7V |
| Full Charge Voltage | 4.2V |
| Discharge Cutoff Voltage | 2.5V |
| Continuous Discharge Rate (CDR) | 20A |
| Rechargeable | Yes |
| Protected | No (Unprotected cell – use with proper safety measures) |
| Cycle Life | ~250-300 charge cycles |
| Diameter | 18.3mm |
| Length | 65.0mm |
| Weight | ~43g |


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