These chargers are also called ''taper chargers'' given that charging present cuts down little by little, since the battery gets charged. "On more recent cars and trucks, disconnecting the battery to charge it will eventually shed each of the memories in all the Digital doo-dads in the vehicle," states Arman. https://www.evernote.com/shard/s417/sh/26a9d7b4-0bc5-4feb-5e1f-e86952db2883/sia89pWRKxy1wijtI_QjtbULUshFUkmbrWIoAS2r-oEHQ91LWrhjx1nwfQ