YX850 Power Failure Auto Switching Backup Module | 5V–48V Emergency Power Supply Converter for Battery Systems (Blue)

Product Description

The YX850 (also known as JY-850) is a universal automatic power switching module that ensures uninterrupted power during main power failure by seamlessly switching to a Li-ion or lithium battery backup. Designed for DC 5V to 48V systems, it is widely used in routers, CCTV systems, IoT devices, microcontroller projects, and other critical electronic equipment. When AC or DC input power fails, the module automatically powers the system from the battery without interruption—making it ideal for DIY uninterruptible power supply (UPS) solutions.