I have an old (~10 yrs?) SCS750 controller that is not holding settings in memory.  Last summer Raven suggested changing the internal battery.  I'm just now looking into that; today Raven is searching for their part number.  This is the old 3 circuit board unit with a 24pDIP lithium A0957B battery; the battery is LT brand.  It also has the number M48Z02-150PC1 printed on it.  This number returns a number of hits on google; here is one link with specs.

Do any of you have a good reliable source for such a battery, if Raven cannot furnish it?  TIA  Gary