
18650 36.0V 20.8Ah Lithium-ion Battery Pack
Electrical Specifications
| Property | Parameter |
|---|---|
| Product Number | 40AQ033-01 |
| Cell Model | 18650 / 2600mAh / 3.6V |
| Battery Configuration | 18650-10S8P |
| Nominal Voltage | 36.0V |
| Nominal Capacity | 20.8Ah |
| Rated Energy | 748.8Wh |
| Charging Voltage | 42.0V |
| Discharge Cut-off Voltage | 25.0V |
| Standard Charging Current | ≤10.0A |
| Standard Discharge Current | 20.0A |
| Max Continuous Discharge Current | 20.0A |
| Internal Resistance | ≤200mΩ |
Mechanical & Environmental
| Property | Parameter |
|---|---|
| Charging Temperature | 0~+45℃ |
| Discharge Temperature | -30~+60℃ |
| Storage Temperature | -20~+20℃ |
| Dimensions | 210 × 235 × 95 mm |
| Weight | 7.0 kg |
| Battery Case | Sheet metal housing |
| Protection System | Short circuit / overcharge / overdischarge / overtemperature / overcurrent / ESD protection |
Application Background
This battery solution is designed for security equipment, including surveillance cameras, alarm systems, and perimeter protection devices operating in continuous monitoring scenarios.
The system requires uninterrupted long-term power supply and stable performance in complex environments, demanding high endurance, power stability, and safety protection.
Project Challenges
Security devices require 24-hour continuous operation
Outdoor and harsh environments cause temperature and load fluctuations
Frequent charge-discharge cycles require long cycle life
Limited installation space with strict size constraints
Customized Battery Solution
High-reliability power design: ensures stable continuous power for security systems
Multi-protection system: overcharge, overdischarge, overcurrent, short-circuit protection
Wide-temperature adaptability: stable operation in complex environments
Compact structure design: fits various security device installations
Application Results
Enables 24/7 continuous stable operation
Improves system power stability by ~20%+
Reduces maintenance frequency significantly
Stable cycle performance extends overall service life
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)












