SYSTEM FOR POWERING UNINTERRUPTIBLE POWER SUPPLY (UPS) USING EXTERNAL BATTERY CABINET (EBC)

A system may include an external battery cabinet (EBC) configured to power an uninterruptible power supply (UPS), where the EBC operates at a predetermined battery voltage. The system may include a boost pulse-width modulator (PWM) controller including two or more operating switches and a boost converter coupled to the boost PWM controller, where the boost converter is configured to increase the predetermined battery voltage. The system may include a bypass circuit to allow power to directly flow from the EBC to the UPS. The system may include a voltage sensing circuit configured to measure a voltage of the EBC and the UPS. The system may include a microcontroller configured to generate one of one or more boost signals or one or more bypass signals to activate one of the boost converter or the bypass circuit based on the voltage of the EBC and the UPS.