Auxiliary power to dash area

[Ray]

A friend was stranded once near Little Rock and by the time he was able to contact a tow truck and give his location his phone was almost dead.
After that I carry the same USB adapter you show and keep it in my tankbag.
I have never used it but it's there just in case.

(...with a small spare lithium battery pack - or two if you include your Antigravity Micro-Start power supply.)