
7.4V 2.2Ah 18650 lithium ion battery Pack
Electrical Specifications
| Attribute | Parameter |
|---|---|
| Product Number | 09AQ071-06 |
| Cell Model | 18650/3.7V/2600mAh |
| Battery Configuration | 18650-2S1P |
| Nominal Voltage | 7.4V |
| Nominal Capacity | 2600mAh |
| Rated Energy | 19.24Wh |
| Charging Voltage | 8.4V |
| Discharge Cut-off Voltage | 6.0V |
| Standard Charging Current | ≤2000mA |
| Standard Discharge Current | 2000mA |
| Max Continuous Discharge Current | 3000mA |
| Internal Resistance | ≤250mΩ |
Mechanical & Environmental
| Attribute | Parameter |
|---|---|
| Charging Temperature | 0~45℃ |
| Discharge Temperature | -20~60℃ |
| Storage Temperature | -20~35℃ |
| Dimensions | 75×38×20mm(Max) |
| Weight | 100g |
| Battery Case | PVC |
| Protection System | Short circuit protection, overcharge protection, over-discharge protection, overcurrent protection |
Application Background
This battery solution is designed for ECG machines and medical testing instruments, widely used in hospitals, outpatient clinics, and mobile diagnostic scenarios.
The device requires continuous and stable signal acquisition, demanding high power stability, compact size, and safety reliability.
Project Challenges
Continuous operation for 4–12 hours medical monitoring
High-precision signal acquisition requiring stable voltage output
Frequent charge-discharge cycles requiring stable cycle performance
Compact portable structure with strict size and weight limits
Customized Battery Solution
7.4V dual-series lithium structure for stable medical device power supply
Built-in multiple protections: overcharge, over-discharge, overcurrent, and short circuit protection
Lightweight PVC encapsulated design for portability and easy integration
Wide temperature operating capability for various medical environments
Application Results
Ensures stable continuous operation of ECG equipment
Improves consistency and reliability of diagnostic power supply
Enhances portability and mobile usability of the device
Extends overall service life and operational stability of the equipment
We support flexible customization based on your project requirements, including:
- Voltage range: 3.2V – 72V
- Capacity range: 100mAh – 100Ah
- Electrical performance design: Charge/discharge parameters, C-rate, internal resistance, temperature performance
- Mechanical design: Appearance, dimensions, housing material, and integrated structural engineering
- BMS design: Battery protection, cell balancing, and communication protocols (SMBus / I2C / UART)











