Is your car battery more than 3 years old? It could be on the verge of dying, and you might not even realize it. Keep a closer eye on how much life it has left by purchasing one of the many car ...

For this week video, I've build the classic non contact voltage tester circuit with e transistors. As an experiment, I've also added a 4th one to see how it will behave. The transistor I used is ...

The Topdon BT200 Battery and Charging System Tester showed up at exactly the right time. I’ve gotten a couple of sporadic check engine lights from a low-voltage code with no noticeable difficulty ...