AC/DC…this is how to rock on R.E.D.
We made this next improvement to reduce the battery draw while on shore power. Even when plugged into an AC source our Dometic CF50 cooler was always taking its power from the battery.
Original DC Plug
DC Plug Disassembled
The original cigarette lighter plug was canabolized for parts.
AC to DC Adapter
This 110V to 12V converter will be active when plugged on shore power. It has a backup connection for 12V which means if shore power is cut, it will automatically provide continual power from the battery to the cooler compressor (B- B+ connection)
Original DC Plug Now Attached to Permanent DC Terminals
Connecting to House (B) Battery
Ready to test
Attached in Galley
Some Supervision Required
Secured on Plywood Backing
Baltic plywood painted and mounted during last year’s galley project (here) made it easy to secure the adapter.
Plug to 110V GFCI Outlet
Cooler with its new mylar blanket (post of the making of here) back in place and ready for the season to begin.
Ready to Rock ‘n Roll
Essentials Nicely Chiiled
- 110V to 12V converter
- electrical tape
- wire cutters
- crimping tool
- terminal connectors
- beer
Does this permit using the batteries to supply DC to AC underway, or does it allow you to power DC loads via the AC system in port, or both. I’m praying for both. Seems an elegantly simple solution to that issue.
Both Lance. When plugged to AC (shore power or wherever) it won’t draw from the battery. But when we leave the dock or if there is a cut in AC power it will automatically start drawing from the battery (DC). For example, today we plugged into AC to do some work onboard, battery switched to ‘off’ and cooler was chillin’ the beer. You’re right in that it does seem like an elegant solution. Excellent for preserving the life of the battery. Rock on!