Bare board uninterruptible power supply Open UPS is designed to provide regulated power output from the widest input voltage (9-27V) or backup batteries,

 MCU assisted lithium battery charging, and battery balancing in a single PCBA.The battery is inserted into the device without any additional processing between the battery and the UPS.

 The UPS includes a synchronous step-down to step-up converter with high-precision voltage and current regulation and automatic system power path selection from adapters or batteries.

It charges the battery in three stages: preprocessing, constant current mode, and constant voltage mode.

 Full feature list:

Installation of 2.5 inch hard disk location

USB interface for Windows/Linux devices

Input 9-27V

Produce a stable 12V output voltage

Output continuous current 5A

Supports lithium ion (3.7V) battery chemistry

Three-state charger (pre charged, constant current, constant voltage) Battery balance 4S configuration Coulomb calculation.

Charging voltage 4x4.2V, charging current 1A, pre charging current~0.3A

Battery temperature monitoring and temperature compensated charging for each battery

Detect the motherboard through power consumption or 5VUSB presence

Missing battery cell detection

Windows/Linux can detect the entire battery operating state

Applications: all-in-one computer, NAS chassis, NAS computer, industrial BOX, MINI computer, various mobile devices