Brush away any dirt or gunk from the posts, because you'll need to create as clean and solid connection as you can. First, connect one end of the red clamp to the positive post on the dead battery.

Those two stats would smash Tesla's current top options, not to mention every other car and battery out there. Tesla's most long-range vehicle, the Model S 100D, offers an estimated 335 miles per ...

Electric car batteries should not, generally, be charged to 100%. Long-term, this reduces the battery's longevity, and Tesla cars actually charge up to 90% by default. But if you're pressed for ...