Optima Yellow Top. It is a gel cell battery made just for you application.
They are a sealed gel cell battery. You can mount them anywhere, including upside down. In the event of a puncture, leakage is minimal, especially compared to a regular battery. They are made for deep cycling, like in a winching application. My brother in law runs two in his Jeep, for running the winch and off road lights. That setup, with the high-current premierr welder/alternator is a great high power, high current setup. It would be really cool to add to one of these compact tractors...
They are also used in all the Medic units in the local fire disrics around here. They handle the lighting load better than any other battery we've seen. When the Medic unit is running both air units, all the outside lights and siren, and all the interior lights, they can really use up the power!
Thier batteries are a little on the pricey side, but they do last; Randy has had his for 8 years now. Oh, he has used them too, with the Warn winch, and big off road lights. I know of others who have got lots of years out of them.
<A target="_blank" HREF=http://www.optimabatteries.com/products/deep_Cycle/index.asp>http://www.optimabatteries.com/products/deep_Cycle/index.asp</A>
Here is thier web page