Samsung INR 40T 21700
| Model No. | INR21700-40T |
| Standard Discharge Capacity | Min. 4000mAh |
| Charge: 0.5C(2A), 4.20V, 0.05C(200mA) cut-off @RT | |
| Discharge: 0.2C(800mA), 2.5V cut-off @RT | |
| Rated Discharge Capacity | Min. 3900mAh |
| Charge: 1.5C(6A), 4.20V, 0.025C(100mA) cut-off @RT | |
| Discharge: 10A, 2.5V cut-off @RT | |
| Nominal Voltage | 3.6V |
| Standard Charge | CCCV, 2A, 4.20V, 200mA cut-off |
| Rated Charge | CCCV, 6A, 4.20V, 100mA cut-off |
| Charging Time | Stardand charge: 180min / 200mA cut-off @RT |
| Rated charge: 70min / 100mA cut-off @RT | |
| Max. Continuous Discharge Current (Surface Temperature) | 35A without temperature cut |
| 45A with 80℃ temperature cut | |
| Discharge Cut-off Voltage | 2.5V end of discharge |
| Cycle Life | Capacity ≥ 2400mAh @ after 250 cycles |
| 60% of the standard capacity @RT | |
| Charge: 6A, 4.20V, CCCV 100mA cut-off @RT | |
| Discharge: 35A, 2.5V cut-off @RT | |
| Retention Characteristics | Capacity recovery after the storage ≥ 3510mAh |
| 90% of the rated capacity @RT | |
| Charge: 6A, 4.20V, CCCV 100mA cut-off @RT | |
| Storage: 30 days @ 60℃ | |
| Discharge: 10A, 2.5V cut-off @RT | |
| Cell Weight | 70.0g Max. |
| Cell Dimension | Height: 70.30mm Max. |
| Diameter: 21.22mm Max. |
| Related Models | Reference |
| INR21700-40T | Samsung 40T 21700 Battery |
| INR21700-50S | 21700 Samsung 50S |
The Samsung INR 40T 21700 is widely recognized in the energy sector as a premier high-performance rechargeable lithium-ion power cell. This specific model, often referred to simply as the Samsung 40T 21700 battery or the li-ion Samsung 40T 21700, represents an ideal balance between substantial energy capacity and high-power output, a critical combination for today's demanding electronic and industrial applications.
Manufactured by Samsung SDI, the Samsung 40T 4000mAh 21700 cell boasts a nominal capacity of 4,000mAh. This generous capacity ensures extended operational runtimes for devices, making it a reliable choice where continuous power is essential. More importantly, it features an impressive maximum continuous discharge rating (CDR) of 35A. This high discharge current is the cell's defining feature, enabling it to deliver intense, sustained power without the significant voltage sag or premature thermal throttling often associated with lesser-quality cells.
Its robust design and specifications have solidified the Samsung 21700 battery 40T as a preferred choice for high-drain applications. These include, but are not limited to, electric vehicles (EVs) and e-bikes, high-wattage professional power tools, high-intensity LED flashlights and tactical gear, and custom-built energy storage systems (ESS) and battery packs. Professionals and enthusiasts in these fields appreciate the cell’s reliability, high-energy density, and durability across a broad range of operating temperatures. The consistent performance of this advanced li-ion Samsung 40T 21700 cell ensures that high-power devices operate at their peak efficiency for longer periods. It is an unprotected, flat-top cell intended for integration into systems with an external Battery Management System (BMS) for enhanced safety and optimal performance.
Manufactured by Samsung SDI, the Samsung 40T 4000mAh 21700 cell boasts a nominal capacity of 4,000mAh. This generous capacity ensures extended operational runtimes for devices, making it a reliable choice where continuous power is essential. More importantly, it features an impressive maximum continuous discharge rating (CDR) of 35A. This high discharge current is the cell's defining feature, enabling it to deliver intense, sustained power without the significant voltage sag or premature thermal throttling often associated with lesser-quality cells.
Its robust design and specifications have solidified the Samsung 21700 battery 40T as a preferred choice for high-drain applications. These include, but are not limited to, electric vehicles (EVs) and e-bikes, high-wattage professional power tools, high-intensity LED flashlights and tactical gear, and custom-built energy storage systems (ESS) and battery packs. Professionals and enthusiasts in these fields appreciate the cell’s reliability, high-energy density, and durability across a broad range of operating temperatures. The consistent performance of this advanced li-ion Samsung 40T 21700 cell ensures that high-power devices operate at their peak efficiency for longer periods. It is an unprotected, flat-top cell intended for integration into systems with an external Battery Management System (BMS) for enhanced safety and optimal performance.
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