Reliance RS40 21700 4000mAh Tabless Battery – Unprotected is available from Rocket Distributing. Compare the cell specifications, terminal shape and protection requirements with your device or battery-pack design.
Product specifications
| Brand | Reliance |
|---|---|
| Model | INR21700-RS40 |
| Size | 21700 |
| Capacity | 4000mAh minimum under the manufacturer standard test |
| Nominal voltage | 3.6V |
| Charge voltage | 4.2V |
| Discharge cutoff | 2.5V |
| Standard charge current | 2A |
| Maximum continuous discharge | 70A only with 80°C cell-temperature cutoff |
| Dimensions | 21.35mm maximum diameter × 70.30mm maximum height |
| Weight | 67g maximum |
| Cell-surface temperature limits | Charge 0°C to 60°C; discharge −20°C to 80°C |
| Protection | Unprotected; external protection and temperature monitoring required |
| Terminal | Flat top |
Fit, protection and charging
A matching cell size alone does not establish compatibility. Follow the cell and equipment documentation for charging voltage, current and temperature limits. Do not use damaged cells or carry loose cells with metal objects.
Compare battery chargers, then confirm the exact chemistry, charging voltage and physical fit in the charger manual.
Technical documents
Order or request quantity pricing
Email Sales@RocketDistributing.com with product reference RELIANCE-RS40, quantity, delivery location and timing. For compatibility help, include the equipment model and battery or charger label.