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Internal memory battery

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Gary T View Drop Down
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    Posted: 14 May 2014 at 8:16pm
Perhaps this topic has been addressed before.   Are there any internal memory batteries that will need to be replaced during a 5 to 10 year interval (by an authorized dealer)?
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FORANE View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote FORANE Quote  Post ReplyReply Direct Link To This Post Posted: 15 May 2014 at 6:47am
Search for the thread "warranty and repair options" and within that thread it was discussed.  Here is a post regarding the memory battery:

Originally posted by AviJake AviJake wrote:

There is a battery in the IFD540 (and 440).  It holds up the unit settings memory and the on-board real-time clock.   We also have a capacitor (aka "super cap") that is designed to hold up the battery and the super cap can stay charged for somewhere between 3 weeks and 3 months.   The battery has a design life of 7-10 years..

So, in summary, the battery should work for 7-10 years.  If at that point, the battery dies (there is a CAS message alerting the pilot of that condition), as long as the unit is powered up every 3-12 weeks (before the capacitor has lost all charge), the settings memory will remain intact and the real-time clock will be updated and no noticeable degradation of the unit will be experienced aside from the recurrent CAS message at each power up.

Since the battery is buried inside the IFD, when it is time to replace the battery, it's a factory service event and not something that can realistically be replaced in the field.


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