2S 20A 7.4V 18650 Lithium Battery Protection Board

Description

[Lithium Battery Protection Board] Features – Over Charge Voltage Range: 4.25-4.35 V + 0.05 V Over Voltage Range: 2.5-3.0 V + 0.05 V Max. Operating Current: 13 A Max. Limiting Current: 20 A Charging Voltage: 8.4-9 V Model HX-2S-D20 Over Charge Voltage Range 4.25-4.35 V + 0.05 V Over Voltage Range 2.5-3.0 V + 0.05 V Max. Operating Current 13 A Max. Limiting Current 20 A Charging Voltage 8.4-9 V Quiescent Current Lower than 10 µA Internal Resistance <300 Ohm Operating Temperature -40°C to +50°C Size 20.4×45.8×3.5mm BMS (Battery Management System) is designed to monitor the status of batteries, control the charging/discharging process, etc. Two 18650 batteries can be connected to the HX-2S-D20 charge-discharge controller module at the same time. The module has short-circuit, overcharge, and over-discharge protection. One of the charge controller’s functions is to turn off the power supply to the batteries when at least one battery reaches its maximum capacity. This BMS controller is designed for more than 30,000 hours of operation. The maximum allowable current is 20 A. If the maximum permissible supply voltage value is exceeded, the charge controller enters “protection” mode. To restore the module, either reapply voltage to the BMS board’s input or wait until the charge controller automatically disables protection. The module receives power from an external source. The module’s voltage range is 7.4 to 8.4 V. A step-up voltage converter with a current limiter can be used to charge. Please note this module is not a charger. BMS (Battery Management System) is designed to monitor the status of batteries, control the charging/discharging process, etc. Two 18650 batteries can be connected to the HX-2S-D20 charge-discharge controller module at the same time. The module has short-circuit, overcharge, and over-discharge protection. One of the charge controller’s functions is to turn off the power supply to the batteries when at least one battery reaches its maximum capacity. This BMS controller is designed for more than 30,000 hours of operation. The maximum allowable current is 20 A. If the maximum permissible supply voltage value is exceeded, the charge controller enters “protection” mode. To restore the module, either reapply voltage to the BMS board’s input or wait until the charge controller automatically disables protection. The module receives power from an external source. The module’s voltage range is 7.4 to 8.4 V. A step-up voltage converter with a current limiter can be used to charge. Please note this module is not a charger.

🔹 Key Features

• •[Lithium Battery Protection Board] Features – Over Charge Voltage Range: 4.25-4.35 V + 0.05 V Over Voltage Range: 2.5-3.0 V + 0.05 V Max
• •Operating Current: 13 A Max
• •Limiting Current: 20 A Charging Voltage: 8.4-9 V Model HX-2S-D20 Over Charge Voltage Range 4.25-4.35 V + 0.05 V Over Voltage Range 2.5-3.0 V + 0.05 V Max
• •Operating Current 13 A Max
• •Two 18650 batteries can be connected to the HX-2S-D20 charge-discharge controller module at the same time
• •The module has short-circuit, overcharge, and over-discharge protection

🔹 Technical Specifications

🔹 Pin Configuration & Wiring

🔹 Applications

This component is engineered and suitable for:

• •Microcontroller interfacing (Arduino, ESP32, Raspberry Pi, STM32)
• •IoT telemetry, environmental monitoring, and smart home systems
• •Robotics navigation, obstacle detection, and motion sensing
• •STEM education, university electronics labs, and maker prototyping

🔹 Package Includes

• ✓1 × 2S 20A 7.4V 18650 Lithium Battery Protection Board