When looking for a maintenance-free battery for intensive use, we advise traction batteries.
A typical feature of traction batteries is the positive tubular plates. Tubular plates can be described as multi-pronged forks made from lead bars and around each tooth of the fork there is a sleeve made from material that contains the active mass. Because active mass is inside a material sleeve, it disintegrates much more slowly than flat plates and therefore achieves a much longer life-span.
Traction batteries are used for intensive use with cleaning machines, access equipment, electric wheelchairs, golf carts and caddies, caravans, mobile homes, boats, etc.