Recommended AC to DC Converter that Will Work w/out Batteries
Updated 09/22/2026 | Published 09/18/2026
Products Featured in This Question
Question:
I am interested in using the ProNauticP 1230P, part PM74ZR as a dedicated Power Supply, to convert 120VAC to continuous 12VDC for my houseboat. it is always docked and has no batteries. by ing PS during setup, is this a good choice for a dedicated Power Supply?
asked by: Paul R
Expert Reply:
Unfortunately you can not Paul but I have a solution. To convert 120VAC to continuous 12VDC for your houseboat, you'll need the PowerMax item # PM54VR. When plugged into shore power, it’ll convert AC power to 12V DC and run your lights, fans, water heat, and other 12V loads directly via the DC fuse box.
The PowerMax item # PM54VR is rated for 35 amps of output. You will need to set the internal mode selector to Fixed Voltage. This keeps the voltage steady and prevents the unit from searching for a battery or cycling through charging stages.
We also have the PowerMax converters in higher amperages item # PM34VR 45 amp, item # PM94VR 55 amp, item # PM44VR 60 amp, and item # PM84VR 100 amp.
The ProMariner ProNautic 1230P Battery Charger item # PM74ZR has to be connected to a system that has a battery even in the PS or Power Supply mode.
What kind of house boat do you have? Feel free to answer this and throw in any other questions you have, where it says Add Comment.
(click to enlarge)
(click to enlarge)
Product Page this Question was Asked From
PowerMax AC to DC Converter w/ Built-In 3-2-1 Stage Battery Charger - 12V - 35 Amps
- Power Converter
- Converter Only
- Manual Switch
- 12V
- 35 Amps
- AC to DC
- AGM
- Gel
- Lead Acid
- Lithium
- Marine
- RV
- Van
- Multi-Stage Charge
- PowerMax
more information >
Featured Help Information
Instructions
Continue Researching
- Video: Talking RV Power Converters with PowerMax
- Video: Review of PowerMax RV Power Converter - Converter Only - PM54VR
- Q&A: Can PowerMax AC to DC Converter be Left Connected When Using DC Power Circuit to Charge Battery
- Shop: PowerMax AC to DC Converter w/ Built-In 3-2-1 Stage Battery Charger - 12V - 35 Amps
- Shop: WFCO Auto Detect RV Converter and AC/DC Distribution Panel - 12V - 25 Amp
- Shop: WFCO Auto Detect RV Converter and AC/DC Distribution Panel - 12V - 35 Amp
- Q&A: Correct Way to Wire Trailer Breakaway Kit
- Shop: ProMariner ProTechOne Digital Series Battery Charger and Maintainer with Cord - 4 Amp
- Shop: Rich Solar NOVA 3K12 Pure Sine Wave Inverter with Built-in Transfer Switch - 12V - 3000W
- Shop: PowerMax AC to DC Converter w/ Built-In 3-2-1 Stage Battery Charger - 12V - 75 Amps
- Shop: Victron Orion-Tr RV Converter - Isolated - DC to DC - 12V/12V - 9 Amp
- Q&A: Wiring Diagram for Progressive Dynamics Inteli-Power RV Converter and Smart Battery Charger
- Q&A: Will Running the 12 volt Accessory Wire from a 7-way to a Trailer Battery Overcharge it
- Search Results: trailer hitch
- Q&A: Can RV 15 Amp Converter be Upgraded to 35 Amp
- Video: How To Choose Camper Leaf Springs
- Article: Trailer Wiring Diagrams
- Shop: Trailer Hitch
- Search Results: trailer tires and wheels
- Article: Breakaway Kit Installation for Single and Dual Brake Axle Trailers
- Shop: Trailer Wiring
- Search Results: trailer wiring
- Video: Review of PowerMax RV Power Converter - Converter and AC/DC Panel - PM47VR
- Shop: Suspension Enhancement
- Shop: Brake Controller
- Video: Review of PowerMax RV Power Converter - 30A RV Power Center Distribution Panel - PM67VR
- Search Results: trailer jack
- Video: Review of WFCO Power Converter - 35 Amp RV Power Center - WF28FR
- Shop: Gooseneck Hitch
- Search Results: rv air conditioners
on Power Converter
