Fluke 289 query

[orbiter]

Just got myself a Fluke 289.. It's as brand new but about a year old according to the cal details.

My query is regarding the internal watch type battery. Is it a rechargable type batt that charges from the main AA batts?  I only ask becasue I'm finding that
if I pull the main AA batts out for just a few seconds, the clock needs ressetting again when it's turned on.

Thanks guys

[mimmus78]

Yes there is a super cap for this. Old models used to have a super cap that get rusty due to leakage.

Maybe your unit is more old than declared, worth checking. You'll find other threads on this subject with more details.

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[orbiter]

Are you saying that folk are replacing the stock battery with a super-cap?

The batt is definately dead reading an unstable 2.4v, assuming it's a 3v one.  I just need to know if its a rechargable type
battery or I need to buy a new one?

This is the batt in question

[ElektroQuark]

It looks like it has been reworked and the original capacitor changed.

[orbiter]

It looks like it has been reworked and the original capacitor changed.

It's a battery..  Note the reference designator. Apparently the later 289's used batteries instead of caps.

I would just like to know what type of cell it is? If it's a rechargable type cell that's great as it will likely just charge up after a few hours of
having the main AA batts installed. Or, if it's a standard type cell I can just make a comfy place for a larger 3v cell to fit in there that will last longer.

[orbiter]

OK so just in case anybody else has this query in future.. The battery that's fitted in the later Fluke 289 is
indeed a rechargeable one.  3v Manganese dioxide Lithium. Number ML621.