7.4V 2750mAh Lithium Ion Battery
Product Number:
05DQ0033-02T
Nominal voltage:
7.3V
Nominal capacity:
2750mAh
Battery Configuration:
18650-2S1P
Dimension:
71 × 37.5 × 19.5 mm
Application:
Portable Equipment
SMBus Communication, Multi-level Protection System, Stable Output
Product Overview
Electrical Specifications
| Attribute | Parameter |
| Product Number | 05DQ0033-02T |
| Cell Model | 18650 / 3.65V / 2750mAh |
| Battery Configuration | 18650-2S1P |
| Nominal Voltage | 7.3V |
| Nominal Capacity | 2750mAh |
| Rated Energy | 20.08Wh |
| Charging Voltage | 8.4V |
| Discharge Cut-off Voltage | 6.0V |
| Charging Current | ≤1.375A |
| Discharge Current | 0.55A |
| Internal Resistance | ≤230mΩ |
Mechanical & Environmental
| Attribute | Parameter |
| Charging Temperature | 0～45℃ |
| Discharge Temperature | -20～60℃ |
| Storage temperature | -20～35℃ |
| Dimensions | 71 × 37.5 × 19.5 mm |
| Weight | 110g |
| Material | PVC packaging |
| Communication Protocol | SMBus |
| Protection System | Short circuit protection / Overcharge protection / Over-discharge protection / Over-current protection |
Application Background
This battery solution is designed for portable water quality testing devices, suitable for field inspection, environmental monitoring, and mobile data collection applications.
Water quality testers often operate in outdoor or complex environments with long-term continuous or intermittent working modes, requiring stable power supply during sampling and analysis processes. High demands are placed on runtime, output stability, and environmental adaptability.
Project Challenges
- The device requires long-duration continuous testing and data acquisition
- Stable voltage output is critical under harsh outdoor conditions
- Frequent sampling and data transmission require strong transient response
- Strict requirements on size and weight for handheld use
Customized Battery Solution
- 2S high-energy density design: 7.3V system with 2750mAh capacity for stable long runtime
- SMBus communication: real-time battery monitoring for improved power management
- Multi-level protection: overcharge, over-discharge, overcurrent, and short-circuit protection
- Compact lightweight structure: optimized for space efficiency and portability
Application Results
- Enables long-duration stable operation for continuous field testing
- Improves output stability and reduces data fluctuation risk
- Reduces overall device weight for better portability
- Enhances battery safety and cycle performance
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)
Get a Custom Battery Solution
Tell us about your project needs. Our engineers will provide a tailored battery solution and quotation within 24 hours.
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