Black & Decker Simple Start Bbc2cb Vehicle to Vehicle Battery Booster

this is the easiest thing to use to jump another vehicle. it is so easy that a total dizt person can use it the first time.

I've used it twice. The first time it didn't work. The second time (months later), I plugged it in expecting it to fail again. Twenty minutes later, I tried the dud car and it started right up. What a surprise. I think a big issue is making sure both cars are connected. Before I stepped away after plugging the cars together, the two red (things are connected) lights flipped to the single green (charging finished) light. I twisted the two cigarette lighter socket plugs and the red lights came back on for the full 20 minutes.