Panasonic

Panasonic has been making batteries for a long time and they have been proven to work very well in golf trolleys. Also Panasonic makes a large number of batteries in the same case, only the cyclic versions are suitable for electric vehicles. Make sure you don't get a UPS battery which looks exactly the same but will not work for golf trolleys. Click on the picture to see the cyclic batteries from Panasonic.
Panasonic batteries are AGM batteries and fully sealed, spill-proof and maintenance free.