1S-2A Li-ion Round PCB Battery Management System (BMS)

Overview:
The 1S-2A Li-ion Round PCB BMS is a compact and efficient Battery Management System designed for single-cell (1S) lithium-ion batteries, such as 18650 cells. With a continuous discharge current of 2A, this BMS provides essential protection features to ensure the safe operation and longevity of your battery pack.

Key Specifications:

• Battery Configuration: 1S (3.7V nominal, 4.2V fully charged)

• Continuous Discharge Current: 2A

• Overcharge Detection Voltage: 4.25V ±0.05V

• Overcharge Release Voltage: 4.15V ±0.05V

• Over-discharge Detection Voltage: 2.9V ±0.1V

• Over-discharge Release Voltage: 3.0V ±0.1V

• Overcurrent Detection Voltage: 0.015V ±0.03V

• Overcurrent Detection Current: 2A–6A

• Short Circuit Protection: Yes

• Temperature Protection: Yes

• Balance Function: Not available

• Board Size: Φ10.5mm

• Material: FR-4 PCB with HASL lead-free finish

Protection Features:

• Overcharge Protection: Prevents battery overcharging by disconnecting the charging path when the voltage exceeds 4.25V.

• Over-discharge Protection: Disconnects the load when the battery voltage drops below 2.9V to prevent deep discharge.

• Overcurrent Protection: Detects excessive current draw and disconnects the load to prevent damage.

• Short Circuit Protection: Automatically disconnects in case of a short circuit to protect the battery and connected devices.

• Temperature Protection: Monitors temperature and disconnects if it exceeds safe limits.

Applications:

• DIY power banks

• Portable electronics

• LED lighting systems

• Backup power solutions

• Robotics and embedded systems