Samsung
Samsung 40T 21700 4000mAh 35A Rechargeable Battery
$11.99
Samsung 40T 21700 4000mAh 35A Rechargeable Battery (40T3)
What makes this cell so special is it's ability of having "Maximum Balance" with Very High Capacity and while having Ultra-High Discharging/Drain capabilities without any compromise, this was previously thought to be impossible as you have only so much room in a cell for either Capacity or High Drain, Not both.
This is the hardest initial hitting cell made that has a legitimate 4,000 mAh or greater in capacity. With this cell you can have a true "Peace of Mind" that your demanding needs and wants will be more than satisfied and met with no problems. This is a truly a Phenomenal cell in the 21700 form factor size.
Specifications:
| Manufacturer | Samsung SDI |
| Model | 40T (3) |
| Size | 21700 |
| Positive Terminal |
Flat Top |
| Nominal Capacity | 4000mAh |
| Continuous Discharge Rating (max) | 35A |
| Nominal Voltage | 3.6V |
| Maximum Voltage | 4.2V |
| Discharge cut-off Voltage | 2.5V |
| Protected | No |
| Rechargeable | Yes |
| Approx. Dimensions | 21.1mm x 70.4mm |
| Approx. Weight | 68.7g |
| Country of Origin | Republic of Korea |
| Associated Names | INR21700-40T |
| Data Specification Sheet | Samsung 40T (3) Datasheet |
Specs
| Chemistry | Li-ion, nickel-based cathode, cylindrical (IEC model code 'INR': I=lithium-ion, N=nickel-based cathode, R=round) |
|---|---|
| Rated Capacity | 4000 mAh |
| Capacity Mah Rated Minimum Note | 3900 mAh |
| Tested Capacity | 3895 mAh |
| Continuous Discharge | 35 A |
| Nominal Voltage | 3.6 V |
| Max Voltage | 4.2 V |
| Protected Circuit | No |
| Top Type | flat |
| Cell Format | 21700 |
| Length | 70.3 mm |
| Diameter | 21.22 mm |
| Weight | 70.0 g |
| Cycle Life | Capacity >= 2,400mAh after 250 cycles (60% of standard capacity), charge 6A / discharge 35A, both at RT |
| Internal Resistance | 12 mOhm |
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Samsung 40T 21700 4000mAh 35A Rechargeable Battery
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