VCL Series Uninterruptible Power Supply (UPS) is designed with Automatic Voltage Regulation (AVR) including buck/boost technology, suppressing or boosting the voltage from the utility to provide conditioned power to the attached load. Buck/boost minimizes the need to transfer to battery, maximizing the battery life. When the grid power fails, the battery steps in to continue the supply and allow for enough time to finish the current process before gracefully initiating an automatic shutdown of the load until the utility power returns.