Your car is fueled by gasoline but you need a battery in there to make it run. When the battery dies, well, then you need to ask someone for a jump otherwise you’re not going anywhere. Keep abreast of how your battery is doing with the Car Battery Tester.

This device plugs into your rides DC port and gives you an easy to read result. The LED screen will let you know how your battery is doing. If it’s green, you’re good to go. Yellow means that it’s somewhere in the normal range and red means you may need to charge or replace it soon. If there’s nothing at all that means your battery is totally dead.

It will also check your alternator and let you know how that is holding up as well. If you have the kind of car that doesn’t exactly notify when things are going bad then this device is a good way to add a bit of “smart” functionality to your ride. The Car Battery Tester is $29.95.