2S 5A 18650 Li-Ion Battery Protection Board (BMS) – HX-2S-A2

The HX-2S-A2 2S 5A Battery Protection Board (BMS) is a compact battery management solution designed for 2-cell lithium-ion battery packs built using 18650 cells. It provides essential protection against overcharging, over-discharging, overcurrent, and short-circuit conditions, helping to improve battery safety and extend service life. With its ultra-compact size and low standby current consumption, this BMS is ideal for portable electronics, LED lighting, battery-powered devices, DIY battery packs, and embedded systems requiring reliable battery protection.

• Designed for 2S lithium-ion battery packs

• Compatible with 18650 lithium-ion batteries

• Compact and lightweight design

• Overcharge protection function

• Over-discharge protection function

• Overcurrent protection function

• Short-circuit protection with recovery

• Low quiescent current consumption

• Supports charging voltage up to 8.4V

• Long operational life exceeding 50,000 hours

• Suitable for portable battery-powered devices

• Reliable battery monitoring and protection

• Easy integration into custom battery packs

• Enhances battery safety and longevity

• Model: HX-2S-A2
• Battery Type: Lithium-Ion (18650)
• Battery Configuration: 2S (2 Cells in Series)
• Nominal Battery Voltage: 7.4V
• Charging Voltage: 8.4V – 9V
• Overcharge Protection Voltage: 4.25V – 4.35V ±0.05V
• Over-Discharge Protection Voltage: 2.5V – 3.0V ±0.05V
• Maximum Continuous Operating Current: 5A
• Maximum Instantaneous Current: 7A
• Quiescent Current: <10µA
• Internal Resistance: <300mΩ
• Short Circuit Protection: Yes
• Recovery Method: Charging Recovery
• Operating Temperature: -40°C to +50°C
• Storage Temperature: -40°C to +80°C
• Service Life: More Than 50,000 Hours
• Board Dimensions: 17.5 × 17.5 × 3.2mm
• Application: Battery Pack Protection and Management

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