Are there any Power Supplies that use a battery as backup for momentary power interruptions?

S8TS Block-type Switch Mode Power Supply (24-VDC output) and S8T-DCBU-01 DC Backup Block for S8TS can be combined with the specified battery to prevent the 24-VDC output from turning OFF during a momentary power interruption. Depending on the battery used, this combination provides up to 8 A of power, greatly improving system reliability.