I carry one that I've had for 30+ years, so it isn't made any more. But I suggest you get one that plugs into a "lighter" outlet (cars don't have lighters now) since you'll always have that power supply.

Edit to add: the guy at "Project Farm" on youtube reviewed a bunch of these some time back. He found both good and awful models. Worth a watch. Here's a list of everything he has tested: LINK

Last edited by RockyRaab; 07/23/22.
Cleverly disguised as a responsible adult.