One of the most useful devices we carry in our RV tow vehicle SEEMORE is a 12V socket duplicator. What is a socket duplicator? It’s a little adapter cable that gives us more “cigarette lighter” 12V charging receptacles.
This guy gives you FOUR 12V "cigarette lighter" adapter outlets instead of one! (CLICK THE PIC for more info.)
These days, it seems we’re always charging something like a phone or tablet. Then there’s our GPS, which requires 12V socket power. We also carry a radar detector.
With a socket adapter, we have all the charging recptacles we need.
I like the XTG socket adapter, because it not only includes FOUR 12V sockets, but also a USB charge socket (for phones and tablets).
If you travel extensively, you need a socket adapter! ‘Nuff said.