Do I need to program key fob if new battery inserted?

Question by Zhangli68 posted 7 months 2 weeks ago in Maxima

I own a 2012 Nissan Maxima. The key fob battery is failing. Looking at your video the ob looks like CR205. After the battery is replaced do I need to have the fob re-programmed. If I do not need to reprogram where can I buy a replacement today?