How to charge your laptop off a 12 volt battery bank in an RV LIFE

In this video i detail how to run your laptop off a 12 volt battery bank direct. In this manner you don't have to convert the power from 12 volt DC ( the battery bank ) to 110 AC ( for your laptop power charger that plugs into the wall) , and then back to 12 volt DC so the laptop can accept it ( all laptops run on DC or direct current anyway. This is exactly what would happen if you use the stock laptop charger that your PC / Mac comes with. By going direct to the 12 volt battery bank you can save a 20% efficiency loss as you won't have to keep converting your power source.

Here is the one I bought:
https://www.amazon.com/Outtag-Univers...

I am in no way affialted with them. Do you know of a better value universal charger at a better price? Message me and comment below, we wan't to know!