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...
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The common USB adapters (12volt to USB) are five volts out.
When I need a strange voltage...I design and build one.. If you are any good at electronics I can suggest resource material.
When I need a strange voltage...I design and build one.. If you are any good at electronics I can suggest resource material.
