Any deep cycle flooded battery would work in a golf cart - I'm sure there are other applications where they are used in Slovakia that are more common than golf carts. (Industrial floor cleaners, scissor lifts, etc.)
I wouldn't use a "starting" battery though - if it's not a deep cycle battery, you won't get a very long cycle life from it.
Gel or AGM gets around the gas venting problem, with the advantage you can position them without having to keep them upright.
Ben's using such batteries in his converted motorcycle:
http://ecomodder.com/forum/showthrea...rsion-599.html