this is universal charger for vehicles which takes lead acid battery , this model is 60v 20ah , please choose a right model before you order,
IF YOUR battery output voltage is 68.5-69.5v, you can choose a 60v charger,
if your output current is 1.8-2.0A, you should choose a 12ah charger,
if your output current is 2.5-3.0A, you should choose a 20ah charger .
ah is for battery capacity, 12ah is usually for a bike like vehicle 20ah usually for a pedal scooter,