Key Fob Battery

[HoosierDaddy]

If you take the fob apart like changing the batteries you can see why the batteries are oriented + to + with the "plate" between. The batteries are actually powering two different areas of the fob. Look at the connection points and you can see the routing. I had it all apart and noticed the wiring connections.

I should have just swapped the batteries then. Since I doubt any button had been pressed more than 5 or 6 times in 5 years, one battery probably has another year or two in it.

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[Elp_jc]

Using one battery instead of 2 makes a lot of sense.

I've never seen a fob have 2 batteries in my life, and I've bought literally dozens of new vehicles during my 59 years. Did the old Ford fobs have 2 batteries, since you made that comment? The great majority of them have had a single CR2032 3V battery, which is the most common. The CR2450 is also 3V, but about twice as big indeed. With that big a$$ fob, not surprised it needs that big of a battery. Ha ha.