On Dec 14, 12:59*pm, Eric in North TX wrote:
On Dec 14, 11:12*am, "JawBone" Chewintherag.com wrote:

A 'booster-jumper' battery. Anybody know anything about this thing? Can it
possibly work as advertised?

http://www.porta-jump.com/

I don't know if it would work or not, but I'll bet your money would be
better spent on a conventional booster pack.
Those have gotten expensive when I wasn't looking though, I think I
gave around $20 for the last one I bought.http://www.amazon.com/Booster-ES5000.../dp/B000JFHNQA

From $49.99 to $99.99 depending on the features:

http://www.harborfreight.com/automot...ply-38391.html
http://www.harborfreight.com/automot...ssor-8884.html
http://www.harborfreight.com/automot...ack-96157.html