Button-less automatic battery voltage selection.  This charger is suitable for 6 Volt, 12 Volt and 24 Volt DC automotive batteries.  
Button-less automatic battery chemistry selection, suitable for GEL, LEAD ACID, AGM, and Maintenance Free, Calcium types of automotive batteries. 
Can charge 12V Lithium batteries.
Large easy to read LED display shows the charging stage status, volts and amps output and battery capacity.
Inbuilt protection systems for safe operation.
Zero volt start up, enabling recovery and charging of a completely deep discharged battery.  But any load must be removed from the rechargeable battery.
13.5V DC power supply for 8A, 12A and 16A output currents with overload and short circuit protection.
Internal or external short circuit, reverse connection, over temperature, overload and over voltage protection. 
Charger can be hung with a hook, and the power cable can be wound on the back.