I fortunately have not had to use Cyntur Pack Mini Lithium-Ion Jumpstarter to start my car, but it's nice to know I have it if I need it. It's been in my car's trunk for two months, and when I checked it today, the LED meter indicated it was still holding a full charge. (The manufacturer recommends topping it off once a year with the included AC charger, so I set up a reminder on my calendar.)
The 2,000mAh Li-Ion internal battery can also be used to charge mobile devices and it has a built-in flashlight. It comes in a nice zippered case with instructions glued to the inside.
It's very simple to start your car (or someone else's) with this. Just plug the terminal clamps into the battery pack, attach the clamps to the battery terminals, and start the engine. Good riddance to jumper cables.
Cyntur Pack Mini Lithium-Ion Jumpstarter ($(removed)) on Amazon
