BMS charge-discharge controller for 2 Li-Ion 18650 batteries with balancer HX-2S-JH10 8/10 A 7.4V

BMS (Battery Management System) is a battery management system that is designed to monitor the condition of batteries, control the process of charging /discharging batteries, etc.

Two batteries (18650) can be connected to the charge-discharge controller module HX-2S-JH10 at the same time. The features of this charge controller are: protection against short circuit (short circuit) and protection against overdischarge (overcharge). The discharge current of this BMS controller is 8A, and the quiescent current reaches up to 10uA. The battery charge is turned off when the voltage reaches 4.25 - 4.35 V, and the discharge occurs when the voltage drops to 2.7 - 3.0 V.

The battery charge-discharge controller module HX-2S-JH10 has 5 outputs:

B+: battery positive
B-: battery negative
BM: battery assembly midpoint
P-: charge/discharge negative terminal
P+ charge/discharge positive terminal
When the maximum allowable value of the supply voltage is exceeded, the charge controller activates the "protection" mode. In order to restore the operation of the module, it is necessary to reapply voltage to the BMS board input or wait for some time until the charge controller turns off the protection automatically.

The module supply voltage range is from 8.4 to 9.0 V. For charging, you can use a boost converter with a current limiter. Please note that this module is not a charger.

Module Specifications:

Model HX-2S-JH10
Maximum battery charge voltage, V 4.25 ... 4.35
Battery discharge voltage, V 2.7 ... 3.0
Supply voltage, V 8.4 ... 9.0
Discharge current, A 8
Discharge current maximum short-term, A 10
Module dimensions, mm 40 x 16 x 4.