On Wed, 30 Dec 2015 19:10:26 -0600, Gordon Shumway
wrote:

Here is what Pat Goss and George Kurkowski have to say on this
topic...

http://www.motorweek.org/features/go...y-jump-starter

The black unit he used is a DieHard.

http://www.diehard.com/products/chargers-and-portable-power#filter-lithium-ion

"TSA-friendly design for inflight charging"