After your car has gone unused for 2 weeks, the adapter will draw minimal power (max. 1mA daily) from the battery. This energy consumption from the adapter will never fully drain your car battery. If the battery is low, the adapter will automatically switch off.
If your vehicle is left unused for more than 4 weeks, we suggest taking more proactive measures and moving your vehicle to a secure, dry space. This will prevent your battery from being drained.
A trickle charger is generally recommended for longer periods without use to prevent the battery from draining completely. A trickle charger keeps the battery 100% charged with a constant current flow.