A UPS created for powering DC devices is similar to an on-line UPS, other than that it does not want an output inverter. Also, If your UPS's battery voltage is matched With all the voltage the product demands, the device's power supply won't be necessary either. Given that one or https://troysdkrw.shotblogs.com/uninterruptible-power-supply-ups-fundamentals-explained-47724111