? HXYP-2S-A18 2S 18650 Li-ion Battery Charger Protection Board – 7.4V 4A BMS Module

The HXYP-2S-A18 is a high-performance Battery Management System (BMS) designed for 2S 7.4V Li-ion 18650 battery packs. It offers reliable overcharge, over-discharge, short circuit, and overcurrent protection to ensure the safety and longevity of your lithium battery-powered devices. Ideal for DIY battery packs, robotics, and portable electronics.

✅ Key Features

• ? High-precision voltage detection for each cell
• ⚡ Short-circuit and overcurrent protection with automatic recovery
• ? Wide operating temperature: -40°C ~ +85°C
• ? Ultra-low standby current: ≤6μA
• ? Automatic control of charge/discharge via MOSFET

? Specifications

• Charging Voltage: DC 9V (Constant Current / Constant Voltage), Max 12V
• Max Discharge Current: 4A
• Overcharge Protection:
  • Trigger Voltage: 4.29V ±0.025V
  • Recovery Voltage: 4.05V ±0.025V
  • Delay Time: 1s
• Over-discharge Protection:
  • Trigger Voltage: 3.0V ±0.1V
  • Recovery Voltage: 3.2V ±0.1V
  • Delay Time: 128ms
• Overcurrent Protection:
  • Detection Current: 9.8A
  • Detection Voltage: 200mV
  • Delay Time: 12ms
  • Recovery: Auto
• Short Circuit Protection: Triggered on external short, recovery is automatic (≤50μs)
• Internal Resistance: ≤ 21mΩ (MOSFET)
• Operating Temp: -40°C ~ +80°C
• Storage Temp: -40°C ~ +125°C
• Board Dimensions: 35mm × 17mm

? Package Includes

• 1 × HXYP-2S-A18 2S Li-ion 18650 Battery Protection Board

Perfect for developers building rechargeable battery packs with reliable and intelligent safety features.