2S 20A 18650 Lithium Battery Protection Board

Battery management systems, or BMSs, are intended to regulate how batteries are charged and discharged as well as to keep an eye on their condition.
It is possible to connect two 18650 batteries to the HX-2S-D20 charge-discharge controller module at the same time. The module is protected from overcharging, overdischarge, and short circuits. When at least one battery reaches its full capacity, one of the charge controller’s duties is to cut the batteries’ power supply. The design of this BMS controller calls for around 30,000 hours of operation. A maximum of 20 A is permitted.

Five pins make up the HX-2S-D20 BMS module:
B+: The positive pole of the battery
B-: The negative pole of the battery
BM: A battery assembly’s midpoint
P-: Terminal for negative charge and discharge
P+: Terminal for positive charge/discharge

The charge controller engages the “protection” mode if the supply voltage exceeds its maximum allowable value. Reapplying voltage to the BMS board’s input is required to restore the module, or you can wait for the charge controller to automatically deactivate protection.

Please be aware that this module is not a charger. It receives electricity from an external power source and has a voltage range of 7.4 to 8.4 V. To charge it, you can use a step-up voltage converter that has a current limiter.

Features: 

• Designed for a four-cell battery pack, small in size.
• Easy-to-use circuit that makes connecting simple
• Protection from Overcharge and Overdischarge.