We Supply 24 volt Mobility Battery Chargers, With a 3 Pin connector style fitment. 

Each charger is designed to continuously measure the charging state of the battery and will automatically adjust itself.  At full charge the battery is maintained via trickle charge – e.g. the Numax Charger will keep the battery in optimum condition ready to be used whenever you need it.  This product will never over-charge your battery.