Reliable Power for High-Demand Builds
Tenpower INR21700-40TG 35A @ 80C
Key Features
- 35A continuous discharge
- 4000mAh capacity
- 21700 format
Technical Specifications
| Specification | Value |
|---|---|
| Model | INR21700-40TG |
| Manufacturer | Tenpower |
| Format | 21700 |
| Nominal Capacity | 4000mAh |
| Nominal Voltage | 3.6V |
| Continuous Discharge | 35A with thermal cut-off |
| Chemistry | INR |
Safety Warning for Lithium Battery Usage
Customers should have a clear understanding of lithium battery handling and safety before making a purchase. Lithium batteries are highly sensitive and may pose fire, burn, or explosion risks if improperly handled. Always charge batteries on fire-resistant surfaces, and never leave them charging unattended.
- Not for Use in E-Cigarettes or Similar Devices
- Risk of Fire and Explosion: Misuse can cause batteries to ignite, explode, or release harmful gases.
- Always Use in a Protected Pack with appropriate BMS circuitry.
- Proper Storage and Handling: Store in protective cases, away from metal items.
- Inspection Prior to Use: Do not use batteries with damaged wrappers or visible damage.
- Follow Manufacturer Charging Specs: Avoid overcharging or over-discharging.
- Heat and Water Precautions: Do not expose to high temperatures or liquids.
- Assembly: Batteries should only be spot welded; do not solder directly onto terminals.
For Resellers: Please ensure all safety information is passed along to end users.
Cell Specification
| Item | Specification and comments |
|---|---|
| Model | INR21700-40TG – cylindrical lithium-ion rechargeable cell |
| Nominal capacity | 4000mAh – Charge: 0.5C (2A) to 4.2V, 100mA cut-off; Discharge: 0.2C (800mA) to 2.5V cut-off, 25±3°C (1C = 4000mA) |
| Minimum capacity | 3950mAh – same standard charge/discharge conditions as nominal capacity |
| Internal impedance at 1000Hz | ≈12mΩ at 25±3°C, 30% SOC |
| Standard charge | CCCV, 2A, 4.2V, 100mA cut-off |
| Rated charge | CCCV, 4A, 4.2V, 100mA cut-off |
| Nominal voltage | 3.6V |
| Max. charging current | 6A |
| Charging time | Standard charge: 150 minutes; Rated charge: 90 minutes (at 25±3°C) |
| Max. continuous discharge current | 35A with 80°C temperature cut-off |
| Discharge cut-off voltage | 2.5V |
| Cell weight | 69.0g max |
| Cell dimension | Height ≈70.35mm; Diameter ≈21.35mm |
| Cell surface temperature (operating) | Charge: 0~50°C (recommended recharge release <45°C); Discharge: -20~80°C (recommended re-discharge release <60°C) |
| Storage temperature | 1 year: -20~25°C; 3 months: -20~45°C; 1 month: -20~60°C. If stored at ex-factory SOC (<30% charge), capacity recovery ≈90% of standard discharge. |
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