On 12/20/2016 at 6:27 PM, psdenno said:

Tire Fix In A Can, the aerosol type, also doesn't last long here in the desert.  I learned that the hard way when a can blew up in my hot car on a typical 120º summer day - goo everywhere! 

Dennis

I wonder if we can get that on the Mythbusters show.  Do you remember the one where they tested the dough-in-a-tube (crescent or cinnamon rolls)?  I don't suppose you have a photo to share, or is it embarrassing?

BTW-  if you are going to comment on a booster pack, please mention how it connects to the battery, and how you charge the pack.  The photos of the box don't usually show much detail.

Tomohawk I wasn't sure if you were commenting to me but for sake of being complete here are some photos and a website to check out the specifics.

https://www.ravpower.com/car-jump-starter-external-battery-black.html

There is no cautions in the instructions about storage or temperature issues. What I know is it is convenient, it works and is has held it charge for nearly a year. Hope this helps

Thanks for the comments.  I read an associated writeup from Consumer Reports, and I think I know enough to get a good unit.

BTW- the battery I carry for my tablet computer  is about 12,000 mah, but I don't think it will jump-start a car...