Recently I had to replace the battery in my 2014 Infiniti Q50 keyless remote (key fob). So I searched for a video and what type of battery to use with my 2014 Infiniti Q50 keyless remote. The video above shows how simple it is to replace the battery.
You can grab a pack of replacement batteries for very cheap! Over at Amazon between $2.70 and $6.45 there maybe more for a cheaper price!
The battery is a CR2032