STD mode will automatically cut-off power after fully charged while trickle model will enter trickle charging and maintain your battery voltage at 12.5V. All around protection including short circuit, overload, low-voltage, high-voltage, overcharge, over-temperature, reverse-connection and over-current protection makes it really plug it and forget it.
Extra long 6.6 ft SAE standard cord with detachable alligator and ring connectors. Press and hold the MODE button for 5 seconds, and the charger will be forced to switch to 12V charging mode.
The charger will lock in the current mode during a power outage and automatically restart into trickle charging mode or standard mode after power is restored. The charger supports long-term charging, so you dont have to worry even if you go out for several months.