Lithium Battery Charger Protection Module (BMS) 2S 13A 8.4V

From the shop's description

Features: Battery Configuration: Suitable for a 2S (2-series) configuration with a nominal voltage of 7.4V (3.7V per cell). Overcharge Protection: Protects against overcharging. Over-Discharge Protection: Prevents over-discharging. Short Circuit Protection: Provides protection against short circuits. Requires addressing the short circuit cause before charging can resume. Effective Life: Expected effective life of more than 50,000 hours. Specifications: 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 V Quiescent Current: Lower than 10 A Internal Resistance: <300 Ohm Operating Temperature: -40°C to +50°C Dimensions: 45x 20mm 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