Description
Reliance RS40 21700 4000mAh 70A Lithium-Ion Battery – Ultra High Drain Power Cell
The Reliance RS40 is a high-performance lithium-ion 21700 rechargeable battery built for power-intensive applications. With a nominal capacity of 4000mAh and a continuous discharge rating of 70A, it offers exceptional output without sacrificing reliability. Ideal for custom battery packs, power tools, e-mobility devices, and high-drain electronics, the RS40 combines robust build quality with outstanding energy delivery.
Key Features
- High Capacity: 4000mAh for long runtimes in power-hungry applications.
- Extreme Discharge Power: Up to 70A max continuous discharge with temperature monitoring.
- INR Chemistry: Delivers a balance of energy density, safety, and thermal stability.
- Durable Construction: Steel shell with safety vent and internal pressure relief design.
- Trusted for Packs: Ideal for integration into professional battery packs and energy systems.
| Manufacturer: | Reliance |
| Model: | RS40 |
| Size: | 21700 |
| Positive Terminal: | Flat Top |
| Nominal Capacity: | 4000mAh |
| Minimum Capacity: | 3900mAh |
| Continuous Discharge Rating (max): | 70A |
| Nominal Voltage: | 3.6V |
| Maximum Voltage: | 4.2V |
| Discharge cut-off Voltage: | 2.5V |
| Protected: | NO, UNPROTECTED. |
| Standard Charge Current: | 2500mA |
| Cycle Life: | =80% capacity after 500 cycles |
| Operating Temperature: | -20°C to 60°C (Discharge), 0°C to 45°C (Charge) |
| Rechargeable: | Yes |
| Approx. Dimensions: | 21.55mm x 70.3mm |
| Approx. Weight: | 65g |
| Country of Origin: | China |
| Data Specification Sheet: | Reliance RS40 21700 4000mAh 70A Battery Datasheet |