PowerMax 45 AMP 12 volt Battery Charger Power Supply Converter Trailer RV Camper (PM4-45)


Regular price $169.99

PowerMax 45 AMP 12VDC Power Converter

Part Number: PM4-45


Power Converter/12 volt Power Supply/ Battery Charger
has a 

Built-in 4 Stage Smart Charge

Reliable, Safe and Clean 12 volt DC Power

Reverse Polarity, Overload and Thermal Protection

UL and CUL Approved



This unit converts 120 volt AC "Shore Power" to 12 volt DC power to operate 12 volt Appliances, lights, and other 12 volt accessories in your Boat, RV, Camper or Trailer. Also a "back up" power supply or battery charger for 12 Volt DC Solar panel installations, or anywhere you need a constant supply of 12 volt DC power up to 45 amps.

This unit DOES NOT have to be hooked to a battery to work, it will provide 12VDC directly to what you need to power.

As a Battery Charger, it is both a 45amp charger and a battery Tender, Maintainer.

This system provides an automatic charging system in four steps.
   1. A fast charge to   bring a good, drained battery back up to full voltage rapidly ("Boost").

  1. A standard charge to bring the battery up to a full

charge at a safe rate to prolong the life of the battery and provide power to run 12V lighting and appliances in the

vehicle/device ("Normal").
3. A trickle charge to keep the battery fresh during times of load inactivity ("Storage").
4. A higher Boost mode is cycled through every 22 hours in a 24 hour continuous cycle to help with battery maintenance and improved charging. (“Desulfation”). The charger automatically changes modes to accommodate changes in conditions

Replacement Converter Chart:

Manufacturer Description PowerMax Replacement


WFCO WF-9845
Iota DLS-45IQ4
Progressive Dyn PD-9145
Progressive Dyn PD-9245
Parallax 7445
Todd Engineering PC-45B



DC Output Voltage (No Load) approx14.8/13.2/13.6/14.4(DC)

Output Voltage Tolerance (No Load): + or -.7%

Output Amperage, Max Continuous: 45 Amps

Output Voltage (Full Load) approx: >13.4V(DC)

Maximum Power Output, Continuous: 600watts

Input Voltage Range: 105 -135 AC

Input Voltage Frequency: 47-63

Maximum AC Current @ 108VAC: 5 Amps

Typical Efficiency: >85%

Max Inrush Current, Single Cycle: 40 Amps

Short Circuit Protection: Yes

Overload Protection: >100%

 Line Regulation: 50 mVrms

Load Regulation: <1.0%

Fan Control: Proportional

Thermal Protection: YES 

Working Temperature Range: 0-45C

Storage Temperature:-20 to 80C

Withstand Voltage: 1240V @ leads

Dimensions: 7.15 X10.5 X 3.45

Weight: 7.0 lbs