Adapter for 12 volt DC > 4 volt DC
We use a Jetpack (Verizon internet connection device)in the RV and usually leave it turned on all the time and being recharged by the RV 12 volt system. The Jetpack lithium battery (18 months old) sw...
Forum Discussion
There are lots of different models of dc to dc converters on eBay. Do a search on "dc to dc converter step down" and choose one with the right current capacity and price.
