3S1P 11.1V 4500mAh 21700 Battery Pack
This 11.1V 4500mAh 21700 battery pack is engineered for medical devices requiring compact dimensions and high-voltage power sources.
By employing UL-certified circuitry and modular design, it addresses critical medical applications’ demands for enhanced safety, precision voltage stability, and environmental robustness.
Key features：
- Integrated with UL-listed protected circuit board
- Other connector models are optional
- Application of medical devices
| No. | Item | Parameter | Remark |
|---|---|---|---|
| 1 | Nominal Voltage | 11.1V | 3.7V/Cell |
| 2 | Nominal Capacity | 4500mAh | @0.2C |
| 3 | Initial Internal Impedance | ≤60mΩ | AC 1KHZ |
| 4 | Standard Charge Voltage | 12.6V | 3.65V/Cell |
| 5 | Standard Charge Current | 0.2C | |
| 6 | Max. Charge Current | 3A | |
| 7 | Standard Discharge Current | 1.5A | |
| 8 | Max. Discharge Current | 10A | / |
| 9 | Burst Discharge Current | 20A | ≤500ms |
| 10 | Discharge Cut-off Voltage | 9V | 2.5V/Cell |
| 11 | Cycle Life | ≥500 cycles | Retention: ≥80% |
| 12 | Charge Temperature | 0°C~45°C | Standard Charge |
| 13 | Discharge Temperature | -20°C~+60°C | Standard Discharge |
| 14 | Storage Temperature | -20°C~35°C | ≤3 Months |
| -20°C~25°C | ≤1 Year | ||
| 15 | Weight | ≈0.25–0.35 | kg |
Common Questions 11.1V 4500mAh Battery Pack Answers
What safety standards does this battery pack's UL certification cover?
The certification covers UL2054 and UL62133. It also passes additional testing to meet the 2x MOPP insulation requirement in IEC 60601-1 (tested at 4000VAC with leakage current <10µA).
Can the battery operate in low temperatures (e.g., -20°C)?
Yes, it supports a wide operating temperature range from -20°C to 60°C.
Are your batteries certified?
CMB’s batteries have UL, FCC, and CE certificates. CMB has sufficient certificate registration experience. If you need other certificates, please contact us.
Can I customize battery packs with different specifications?
Yes, we offer fully customizable battery pack solutions. You can specify the voltage, capacity, dimensions, cell type, discharge rate, connector, and more to meet your application’s exact needs.
Tailored Customization
Our design team can create custom battery designs for just about any device or machine.
Timely Delivery
Our efficient production and distribution process gets your product delivered in a timely manner.
Quality Guarantee
We stand by our products and guarantee you’ll be happy with your purchase.
