$2 Battery you need - https://amzn.to/2l9LBpa

Here is a quick little video on how to replace the 2450 battery on the new Jeep brick key fob. It's a simple job but seeing someone do it first always helps!

Current Part Number: 68416784AA
SIP22 Chrysler / Fiat keyway
FCC ID: OHT1130261
This remote head key also fits:

18 (new body) 19 20 21 Jeep Wrangler
2018 2019 2020 2021 Jeep key fob battery