
26650 25.6V 21Ah LiFePO4 Battery Pack
Electrical Specifications
| Attribute | Parameter |
|---|---|
| Product Number | 39DZ003-02 |
| Cell Model | 26650/3.2V/3.5Ah |
| Battery Configuration | 26650-8S6P |
| Nominal Voltage | 25.6V |
| Nominal Capacity | 21Ah |
| Rated Energy | 537.6Wh |
| Charging Voltage | 29.2V |
| Discharge Cut-off Voltage | 16V |
| Standard Charging Current | ≤10A |
| Standard Discharge Current | 40A |
| Max Continuous Discharge Current | 40A |
| Internal Resistance | ≤150mΩ |
Mechanical & Environmental
| Attribute | Parameter |
|---|---|
| Charging Temperature | 0~45℃ |
| Discharge Temperature | -20~60℃ |
| Storage Temperature | -20~45℃ |
| Dimensions | 400×160×75mm |
| Weight | 7kg |
| Battery Case | Metal Plate Housing |
| Output Type | High Power Output |
| Communication Protocol | RS485 |
| Protection System | Short circuit protection, overcharge protection, over-discharge protection, overcurrent protection, temperature protection, SOC management |
Application Background
This battery solution is specially designed for electric power inspection robots, suitable for power facility inspection, outdoor autonomous patrol, and intelligent maintenance scenarios.
The robot operates in complex outdoor environments for long durations with high-load movement and communication tasks, requiring strong endurance, high pulse power output, and system stability.
Project Challenges
Inspection tasks require continuous operation for 8–12 hours
40A continuous discharge and 60A peak discharge demand high power performance
Harsh outdoor environments require strong temperature adaptability and reliability
Real-time SOC monitoring and communication functions are required for system management
Customized Battery Solution
High-rate power platform: 25.6V/21Ah LiFePO4 configuration for high-load robotic applications
Smart communication system: integrated RS485 communication and SOC management for real-time monitoring
Multiple protection system: overcharge, over-discharge, overcurrent, short circuit, and temperature protection
Reinforced structure design: metal housing for improved impact resistance and outdoor durability
Application Results
Supports continuous robot operation for 8–12 hours or longer
Improves high-load output stability by ~20%+, ensuring reliable performance in complex conditions
SOC real-time monitoring enhances operational efficiency
Stable cycle life reduces maintenance frequency and overall operating cost
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)









