My car is due for service, I was wondering if anyone knows how much dealership will charge to replace battery in my key fob?

There's a brilliant guide here to do it yourself, why pay a dealer silly money? 

As above plus it really is the easiest thing to do yourself.

https://www.briskoda.net/forums/topic/466430-how-to-replace-the-skoda-superb-iii-key-fob-battery-correctly/

 

Dealer will charge you probably 10x what it would cost to do yourself, its less than 5 minutes work.

A fiver per battery. 

I did something wrong when I tried to change mine recently and goosed 2 out of 3 keys

See my post from Nov '21 but check the advice below that about draining the residual power before putting the new battery in. 

 

A timely thread. Thanks for this as I had to change the battery today and would have really struggled without it!

Followed video instructions, easy peasy, thank you all for your advice.