11.1V 5800mAh 3S2P 18650 Li ion Battery Pack
Where unstable power is not an option, our 11.1V 5800mAh battery pack delivers consistent, long-lasting energy for a wide range of medical devices. Designed with a robust 3S2P configuration using high-performance 18650 cells, it meets the rigorous demands of both stationary and portable medical equipment—ensuring safety, runtime, and compliance in clinical and home-care settings.
Key features：
- 11.1V 5800mAh, 3S2P Configuration
- Engineered to Meet IEC 60601-1, CE, RoHS
- Smart BMS with Full Protection
- Customizable Size & Connectors
| No. | Item | Specification | Note |
|---|---|---|---|
| 1 | Nominal Voltage | 11.1V | 3.7V/Cell |
| 2 | Nominal Capacity | 5800mAh | @0.2C |
| 3 | Minimum Capacity | 5500mAh | |
| 4 | Shipment Voltage | / | |
| 5 | Initial Internal Impedance | ≤180mΩ | AC 1KHZ |
| 6 | Standard Charge Voltage | 12.6V | 4.2V/Cell |
| 7 | Standard Charge Current | 1160mA | |
| 8 | Max. Charge Current | 5800mA | |
| 9 | Standard Discharge Current | 1160mA | |
| 10 | Max. Discharge Current | 5.8A | |
| 11 | Burst Discharge Current | 11.6A | ≤5ms |
| 12 | Discharge Cut-off Voltage | 7.5V | 2.5V/Cell |
| 13 | Cycle Life | ≥500cycles | Capacity retention ≥80% |
| 14 | Charge Temperature | 0°C~+45°C | Standard charge |
| 15 | Discharge Temperature | -20°C ~+60°C | Standard discharge |
| 16 | Storage Temperature | -20°C~45°C | ≤3 months |
| -20°C~25°C | ≤1 year | ||
| 17 | Weight | About 270 | g |
| 18 | Special Request |
11.1V 5800mAh 18650 Battery Pack FAQs
What is the typical application of this battery pack?
This high-capacity 11.1V 5800mAh pack is ideal for medical devices, portable monitoring systems, professional lighting equipment, and other applications requiring extended runtime and reliable power in a compact form factor.
What configuration and cells are used?
The pack uses a 3S2P configuration with high-quality 18650 lithium-ion cells, ensuring stable voltage output and increased capacity to support demanding operational cycles.
Does the battery include protection functions?
Yes. It features a built-in Protection Circuit Board (PCB) or Battery Management System (BMS) that safeguards against over-charge, over-discharge, over-current, and short-circuit conditions.
Is this battery certified?
While the battery is custom-built and not pre-certified, its design complies with key international standards such as IEC 60601-1 (for medical devices), UN38.3, CE, and RoHS. We provide full technical documentation to assist with your product certification.
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.
