Tom I use a ASTRON RM 60M-BB (Battery Back Up} and a Optima Battery on My 440 Micor it switches Immediately when You get a Power Failure . You still use the same device that is used on the Micor for the 9.6, which in my case is a Little Regulator Board I do have a Panel mount Bird Wattmeter, and I do notice on Battery power the Wattage drops about 8 Watts. This is probably Normal with the Difference from 13.8 to 12 Volts no one will notice anyway. So the answer is Unless You are using something else other then the 13.8 Supply Voltage then a Reg for the 9.6 You dont need to change Anything.
PS As Much as I like Motorola the Old Motorola Micor Power Supply as you know is Very Very Heavy and Parts were getting Harder to Find. Never had a Problem with any Astron Happy Repeater Building Don KA9QJG
