With so many features, this is a versatile and very easy-to-use charger! Working with 6V, 12V or 24V SLA batteries, this switchmode SLA battery charger has an automatic function that cuts the charging current to near zero once the battery is charged and continues monitoring battery voltage. It automatically detects the battery voltage, ensuring you don’t make any mistakes, and leaving connected for lengthy periods is safe. All you need to do is connect the charger, which starts charging. An LED indicator shows the charging state and alligator clips make connections.