This battery/trickle charger is also commonly referred to as a "bench charger. " Features LED indicators and button controls for easy reading and accuracy. Active Charging Indicator cycles between volts, amps and battery percent. Recessed control panel protects against accidental setting changes. It can charge both a 6-volt and/or a 12-volt battery at 2 amps (trickle), 10 amps (standard) and 20 amps (quick charge). At 12-volts, this bench charger also has a 100 amp Engine Start charging capability. Using the 100 amps emergency start setting is powerful enough to bring cars, SUVs and small trucks back to life. A 13. 6-Volt Power Supply Mode provides DC power supply for powering any 12-volt device (e. g. , a tire inflator) or as a memory retainer when replacing a battery. It is suitable for Absorbed Glass Mat (AGM), GEL and standard (STD) batteries. Automatic charge cycle functionality switches to float mode after fully charging the battery. Short circuit, overheat and reverse polarity protection will not operate if clamps are reversed and an error notification will light up if a Abad connection is detected. Auto Amperage Detection so the charger can detect the best amperage (cycling between trickle and quick or vice-versa) based on battery condition.