Samsung INR21700 40T 4000mAh 3.6V High Drain Li-Ion Battery for Power Tools with 35A Discharge Current
The Samsung INR21700 40T is a high-performance lithium-ion battery designed for demanding applications. With a nominal capacity of 4000mAh and maximum discharge current of 35A, this cylindrical cell delivers reliable power for industrial and commercial use.
| Parameter | Specification |
|---|---|
| Battery Type | INR21700 40T Samsung |
| Nominal Voltage | 3.6V |
| Nominal Capacity | 4000mAh |
| Dimensions | 21×70 mm |
| Max Charge Current | 6A |
| Max Discharge Current | 35A |
| Standard Charging | 0.5C CC to 4.2V, then CV until current ≤0.05C |
| Charging Time | Standard: 3 hours | Rapid: 2 hours |
| Discharge Cut-off Voltage | 2.5V |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | 25°C |
| Life Cycle | >1000 cycles (80% DOD, max 95% DOD) |
- Extended service life compared to lead-acid batteries
- 60% weight reduction for improved portability
- 100% usable capacity with optimal performance
- Higher energy density in compact 21×70 mm size
- Low self-discharge rate for longer storage
- Genuine Samsung quality and reliability
- UL, CB, and IEC62133 certified for safety
- Standard installation and easy integration
- Environmentally friendly construction
- Comprehensive quality guarantee
This high-drain battery is ideal for:
- Power tools and industrial equipment
- Electric vehicles and mobility solutions
- Solar energy storage systems
- Uninterruptible power supplies
- Consumer electronics and home appliances
- Marine and automotive applications
| Battery Type | Available Capacities |
|---|---|
| Cylindrical 18650 | 2000mAh, 2500mAh, 2600mAh, 3000mAh, 3350mAh, 3500mAh |
| Cylindrical 21700 | 2500mAh, 3000mAh, 4000mAh, 5000mAh |
| Prismatic Battery | 50Ah, 80Ah, 100Ah, 170Ah, 202Ah, 302Ah |
| Li-SOCl2 Battery | 34615, 14505, 14250, 14335, 26500, 17335 |
| Accessories | BMS, nickel sheet, high temperature tape, epoxy plate |
We offer custom battery pack assembly with different voltage and capacity configurations according to specific customer requirements.
Our products meet international standards including CE, FCC, ROHS, UN38.3, and MSDS certifications.
SER Group Limited is a professional lithium battery manufacturer with over 17 years of experience in China, specializing in high-quality power solutions for industrial applications.
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