Can I safely keep my battery charger connected to the charging post to maintain all established memory settings?

The memory saver applies just enough voltage and current to keep data in RAM alive until the new battery is installed. The "keep alive" memory" in the car is data collected during the vehicle's ...

Using a battery charger as a memory saver usually does not work well ... article about selling your car that is worth checking out. Smart car shut down while driving. Was it the key fob?