| Project | Parameter |
|---|---|
| Name: | Samsung 40T 4000mAh 35A 21700 Battery cell |
| Manufacturer: | Samsung |
| Model: | INR21700-40T |
| Size: | 21700 |
| Style: | Flat Top |
| Protected: | NO, UNPROTECTED. This cell is unprotected and intended for use in protected battery packs only and NOT individually or as a standalone product. In order to operate safely it must have additional protection in the form of a PCB (protection circuit board) or BMS (battery management system), which is not included. |
| Nominal Capacity: | 4000mAh |
| Discharge Current: | 35A Maximum Continuous (1C) |
| Nominal Voltage: | 3.6V |
| Maximum Voltage: | 4.2V |
| Cutoff Voltage: | 2.5V |
| Approximate Dimensions: | 21.1mm x 70.4mm |
| Approximate Weight: | 66.8g |
| Origin: | Republic of Korea |
| Specification Datasheet: | Samsung 40T Datasheet |
Samsung 40T 4000mAh 35A 21700 Battery cell
$6.99
Samsung 40T 4000mAh 35A 21700 battery cell capacity is 4000mAh, voltage is 3.6V, it is a high-performance 21700 lithium battery
Usage experience: The new internal resistance is about 10-11mΩ, which optimizes the cycle life and supports continuous 35 discharge power lithium batteries.
The batteries are brand new, original and genuine imported batteries, each box contains 200 pcs. The internal resistance and voltage are consistent and can be used directly by spot welding.
Samsung 40T 4000mAh 35A 21700 battery cell is built-in explosion-proof, has high safety performance, does not explode, does not burn, is resistant to high temperatures, has good performance, and is resistant to overcharging.
Suitable for high-power flashlights, power tools, mobile power supplies, and other high-power electrical products.







M. Wendel –
Laptop battery pack rebuilt and running strong.Now I’m back up run times of 4 hours without plugging in to recharge.