What’s not to love? There are two basic ways to install a dash cam. The first and simplest solution is to plug the cam’s power cord into your car’s 12-volt outlet. To do this, use the ...

[Kuzysk] took it upon himself to cut that power draw by a factor of almost 70x. He found his existing dash cam from MiVue consumed 3.5mA in idle which works out to be a whole amp-hour every 12 days.

The only problem is, not all dash cams work when your car isn't running. Many have a plug-and-play design, allowing them to ...