mk2 vtr Key fob

[Alvinums]

I bought my car from a backstreet garage place and they only gave me 1 key and a fob which dont work.
However i replaced the battery but not sure if it was the correct battery tbh.
Could anyone tell me which type of battery and if theres 2 batteries or just the 1?

thanks

[Gibbo-Vtr]

I think its ;
1x CR2016 3v Lithium Battery

[Alvinums]

ok thanks pal