
26650 12.8V 21Ah LiFePO4 Battery Pack
This battery is designed for network testing instruments, used in field testing and industrial signal measurement scenarios. With high-load support and long continuous operation, it ensures stable output and reliable performance in demanding environments.
Electrical Specifications
| Property | Parameter |
|---|---|
| Product Number | 00BQ002-01 |
| Cell Model | 26650 / 3.2V / 3.0Ah |
| Battery Configuration | 4S7P |
| Nominal Voltage | 12.8V |
| Nominal Capacity | 21Ah |
| Rated Energy | 268.8Wh |
| Charging Voltage | 14.4V |
| Discharge Cut-off Voltage | 10.0V |
| Standard Charging Current | ≤5A |
| Standard Discharge Current | 5A |
| Max Continuous discharge current | 5A |
| Internal Resistance | ≤120mΩ |
Mechanical & Environmental
| Property | Parameter |
|---|---|
| Charging Temperature | 0~45℃ |
| Discharge Temperature | -20~60℃ |
| Storage Temperature | -20~35℃ |
| Dimensions | 202 × 114 × 70 mm |
| Weight | 2.8 kg |
| Output Type | — |
| Battery Case | Blue PVC |
| Protection System | Short circuit / overcharge / over-discharge / overcurrent protection |
Application Background
This battery solution is designed for network testing instruments, widely used in communication network testing, signal analysis, and industrial inspection applications.
The equipment requires long continuous operation with stable power output under complex testing conditions, demanding high reliability, endurance, and voltage stability.
Project Challenges
Requires 5A continuous discharge and 10A peak load support
Long-duration operation (8–12 hours continuous testing)
High precision measurement requires stable voltage output
Reliable power supply under outdoor and industrial environments
Customized Battery Solution
12.8V 4S7P LiFePO4 configuration for stable high-capacity output
Industrial-grade PVC enclosure for enhanced durability and protection
Multiple protection system: overcharge, over-discharge, overcurrent, and short-circuit protection
Wide temperature design: -20~60℃ for complex field environments
Application Results
Ensures stable long-duration operation of testing equipment
Improves power stability and safety in complex environments
Reduces interruption risk during critical measurement tasks
Extends overall system service life and reliability
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)












