The fob battery for my 2014 Jeep Cherokee was going dead so I went on EBAY and bought 5 for $5. I used one and will keep another for the other fob, but I hate to keep batteries laying around so if anyone can use one, PM me and I will mail it over to you no charge. I think they charge about $80 at the dealer to do this and it is so easy, takes about 1 minute. This is the fob with the slip out emergency key.
I would keep those batteries because the 2032 is one of the most popular size and fits many different products. LR44 is also a popular size and nice to have a few on hand.