2S 5A 18650 BMS Protection Board – 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. Features 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 Specifications - 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: <300m? - 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 Tutorials 2SBMS-K90 | 2S BMS 7.4V 5A 18650 battery Charging Protection