BMS (Battery Management System)
A battery management system designed to monitor battery status and control charging/discharging processes.
- 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 A
- Internal Resistance: <300 Ohm
- Operating Temperature: -40°C to +50°C
- Length (mm): 44.77
- Width (mm): 18.85
- Height (mm): 3.5
- Weight (gm): 4
Features:
- Small size for a four-cell battery pack
- Simple and convenient circuit for easy connections
- Over-charge/Over-discharge Protection
Two batteries (18650) can be connected simultaneously to the HX-2S-D20 charge-discharge controller module. The module has protection against short circuit, overcharge, and over-discharge. One of the functions of the charge controller is to turn off the power supply for the batteries when the maximum capacity of at least one battery is reached. This BMS controller is designed for more than 30,000 hours of operation. The maximum allowable current is 20 A.
The HX-2S-D20 BMS module has 5 pins:
- B+: Battery positive pole
- B-: Battery negative pole
- BM: Mid-point of a battery assembly
- P-: Negative charge/discharge terminal
- P+: Positive charge/discharge terminal
If the maximum permissible value of the supply voltage is exceeded, the charge controller activates the protection mode. To restore the module, re-apply voltage to the input of the BMS board or wait until the charge controller automatically disables protection. Power is supplied to the module from an external power source. The voltage range of the module is from 7.4 to 8.4 V. For charging, a step-up voltage converter with a current limiter can be used. Please note that this module is not a charger.
Package Includes: 1 x 2S 20A 18650 Lithium Battery Protection Board
* Images are for illustration only; actual product may vary.