This new device might give you piece of mind, to help us stop worrying about a dead battery out in the boonies.
The new Lipo batteries have awesome power.
Watch the videos.
microstart | Antigravity Batteries

 

cool, but check it on Amazon, only about $100 for the XP-1

 

That's quite tasty! My current jump-start luggable has recently died, and this looks much better. Just asked if their home charger can handle 240V...

 

Very impressive!! Thanks!!

 

Just a heads up that this (and most portable jump packs) will not work when you a have a defective battery or a battery that is near full discharge...it simply cannot provide enough voltage to the electronics with a bad battery sucking up nearly all the available current attempting to charge.