05-30-2008, 07:10 AM #1
I was told that their is like a watch batt in the mfd or electric box to keep hrs stored every time i disconect the batt i lose hrs is this true ? or is my mfd bad? any help would be great thanks in advance RiverRat
05-30-2008, 08:22 AM #2
my understanding is that there is a capacitor that keeps the memory powered up .I may be wrong .Anyone?
05-30-2008, 10:46 AM #3
- Join Date
- Jul 2007
- near Toronto, Canada
The accumulated engine hours counter should NOT reset to zero, unless the battery is disconnected for a LONG time (weeks or months). Sometimes the MFD engine hour count seems to get reset to zero if the battery connection is jiggled when the battery is being connected.
Is it the engine hours counter that you are concerned about, or the time-of-day clock?
I don't know whether there is energy storage (a small battery, or a large capacitor) inside the MFD, or non-volatile memory (like flash memory) that doesn't need power. My guess is non-volatile memory.
There is certainly nothing in the electrical box, other than the fuse for the MFD supply from the main battery.
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