I don’t often work with 12-volt systems, but I can appreciate that everything you’d need to build one could be procured at your local auto-parts store. A much better and safer solution is purchasing ...

We recently had to jump-start our 4-year-old Toyota Prius. It turns out that the Prius uses a 12-volt battery for starting. My question is: When the Prius has a large battery that can move the car, ...