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Progressive Dynamics Mighty Mini AC/DC Panel and Converter/Smart Charger - 45 Amp

Progressive Dynamics Mighty Mini AC/DC Panel and Converter/Smart Charger - 45 Amp

Item # PD4045KA
Our Price: $241.83
You Save: $66.93
RV Converters
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Shipping Weight: 6 lbs
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This 2-in-1 AC/DC distribution panel and converter charger keeps your power systems easily accessible inside the RV. Works with lithium and lead acid batteries. Uses a custom charging profile for lithium and multistage charging for lead acid. Great Prices for the best rv converters from Progressive Dynamics. Progressive Dynamics Mighty Mini AC/DC Panel and Converter/Smart Charger - 45 Amp part number PD4045KA can be ordered online at or call 1-800-940-8924 for expert service.
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Progressive Dynamics RV Converters - PD4045KA

  • 45 Amps
  • Lead Acid
  • Lithium
  • 12V
  • Progressive Dynamics
  • Smart Charge
  • Standard Charge
  • 10-3/4L x 7-1/4T Inch

This 2-in-1 AC/DC distribution panel and converter charger keeps your power systems easily accessible inside the RV. Works with lithium and lead acid batteries. Uses a custom charging profile for lithium and multistage charging for lead acid.


  • 2-in-1 unit combines an AC/DC distribution panel with a multifunction converter charger
    • Consolidated system saves space and means you only have to install 1 component
  • Power distribution panel provides power to AC and DC applications in your RV
    • Requires AC breakers and DC fuses (sold separately)
  • Converter charger uses shore power to quickly charge your RV batteries
    • Provides continuous power to run 12V loads
    • Works with lithium-ion, flooded lead acid, AGM, and gel batteries
  • High voltage output provides full, quick charge for your lithium batteries
  • Charge Wizard monitors lead acid batteries and automatically begins charging when needed
    • Multistage charging helps extend battery life
  • Built-in safety features protect your RV's electrical system
  • Hardwired installation into your existing RV electrical system
  • Heat-resistant polymer construction
  • UL listed
  • Made in the USA


  • Application: 12V battery systems
  • Rated power output: 610 watts
  • Amperage:
    • AC distribution: Up to 6 branch circuits rated at 30 amps (using tandem breakers)
    • DC distribution fuses: (2) 30 amp and (10) 20 amp
    • Converter output: 45 amps
  • Voltage:
    • AC distribution rating: 120 VAC
    • Converter input: 105 - 130 VAC
    • Converter output (no load): 13.6 VDC
    • Converter output (full load): > 12.6 VDC
  • Temperature ranges:
    • Operating range: 32 F to 122 F
    • Storage range: -4 F to 176 F
  • Overall dimensions: 12-1/4" long x 8-3/4" tall x 7-1/4" deep
    • Rear cutout: 10-3/4" long x 7-1/4" tall
  • Weight: 5.7 lbs
  • 2-Year limited warranty

Replacement Cross-Reference:

  • WFCO WF-8945ANP
  • WFCO WF-8740P
  • Parallax 7345
  • Parallax 8345
  • Parallax 7145
  • Powermax PPC-32
  • Powermax PPC-45

Note: Not all units are a direct replacement. Modifications may be required.

rv power center

This RV power control center combines an AC/DC panel with a smart converter charger. Creating easy access to your electrical connections, this all-in-one breaker box distributes AC and DC loads to your RV and charges your batteries while connected to shore power. It's compatible with lithium and lead acid batteries.

AC/DC Electrical Distribution

internal view

The panel supplies AC and DC distribution to your RV's electrical system. The AC section has space for up to 3 breakers rated for 120V at 30 amps. This lets you have up to 6 branch circuits when you use tandem breakers. The DC section has 12 branch fuse holders capable of using (2) 30 amp and (10) 20 amp fuses. However, you will need to purchase AC breakers and DC fuses separately to complete the installation.

inside cover

Once all of your connections are made, the breakers and fuses are easily accessible by opening the door on the front of the box. The door also includes a blank label to list all of the connections.

Multifunctional Converter Charger

switch charging mode

The integrated converter charger changes AC shore power into DC power to charge your battery bank. It includes an output mode switch that lets you choose either lithium or lead acid batteries. No matter what type of battery is installed in your RV, you'll always have the most efficient charging profile. If your RV already has a stock converter charger, it will need to be removed to ensure this unit operates properly.

Charging Profile Designed for Lithium Batteries

In lithium mode, the unit uses a higher output voltage, which provides a fast, complete charge. It also extends battery life since it utilizes the appropriate charging profile. Additionally, this mode is compatible with your battery's internal Battery Management System (BMS), which helps manage the charge cycle by monitoring the battery state and balancing cell voltage.

Charge Wizard for Lead Acid Batteries

In lead acid mode, the Charge Wizard automatically switches voltages while your lead acid battery bank charges. This accelerates the charge but also helps extend battery life by adjusting the voltage during the different modes. This function is compatible with flooded lead acid, AGM, and gel batteries.

Charging Modes

  1. Boost: This mode charges at the full rated load for a quicker recharge time. This is where most of the charging happens. It charges the battery up to 90% of the full capacity.
  2. Normal: This mode provides controlled voltage to ensure a full charge. Once the battery begins to reach capacity, the normal state will kick in and reduce the voltage to safely complete the charge.
  3. Storage: Once the battery reaches full charge and remains unused for 30 hours, this mode maintains a lower voltage to compensate for self-discharge. This reduces battery stress and minimizes gassing and water loss.
  4. Equalization: This mode activates to prevent stratification and sulfate buildup during extended storage cycles. These two issues can damage a battery by causing the accumulation of acid at the bottom of the battery and hardened sulfate crystals on the battery plates. This mode is especially helpful when your battery is going unused during storage.

Safety Features

cooling fan

The system includes a number of safety features. It has a reverse polarity protection that will protect the converter if the battery is hooked up incorrectly. Additionally, the unit includes protection for overvoltage, undervoltage, and overcurrent, which can damage your equipment, as well as the converter. The built-in cooling fan also removes excess heat from the unit. The fan speed is proportional to the internal temperature of the converter, so when the power demand is low, the fan will operate quietly.

PD4045KV Progressive Dynamics 4000 Series Inteli-Power Mighty Mini RV Converter with Charge Wizard and AC/DC Distribution Panel - 45 Amp

Replaces PD4045KA

Installation Details PD4045KA Installation instructionsAlternate Instructions PD4045KA Installation instructions

California residents: click here

Customer Satisfaction Score:

Customer Reviews

Progressive Dynamics Mighty Mini AC/DC Panel and Converter/Smart Charger - 45 Amp - PD4045KA

Average Customer Rating:  4.8 out of 5 stars   (898 Customer Reviews)

This 2-in-1 AC/DC distribution panel and converter charger keeps your power systems easily accessible inside the RV. Works with lithium and lead acid batteries. Uses a custom charging profile for lithium and multistage charging for lead acid.


We live in our rv full time and the installation of this power inverter was a great upgrade. I needed one that would charge our lithium batteries while plugged in ana it has worked flawlessly. It is a little smaller then the old outdated one, but was easy to remedy.

working flawlessly. Pretty much plug in the rv and forget it. It does let out a loud squealing noise when you first plug in but it goes away within 30 seconds.
Donald - 11/02/2022


Unfortunately this converter was not a “drop-in” replacement (as advertised by PD) for the existing converter in my trailer. It’s actual dimensions are larger and would not fit in my existing converter space. I should have double checked the specs. More disconcerting was that it was shipped without the factory packaging and manuals by etrailer. It came in a box with paper padding that seemed inadequate to protect sensitive electronics. etrailer needs to do better than this.

I will have our Customer Service team reach out to you. The overall dimensions are 12.25 inches long by 8.75 inches tall by 7.25 inches deeo. The rear cutout dimensions are 10.75 inches long by 7.25 inches tall.
-- Etrailer Expert Jenny N - 03/31/2022


It would be 5 star but the face plate keeps popping off the tabs. For safety for grand kids I drilled and installed 4 screws holding on the face plate. The plastic tabs that secure the face plate need to be strengthened.


Quality product. Great phone support from Progressive Dynamics. Replaced a WFCO unit and needed some clarification on the wiring ... needed to wire the 12V main power lines slightly different than the WFCO, but support clarified how to do it! eTrailer and YouTube videos also helped!


5 stars as I am very happy with all the products purchased from eTrailers. Always great products at a fair price. Thanks!


It's doing the job but I wish it had a charge profile specific to a LiFePo4 battery, no just lithium in general. I've monitored the voltages it's throwing at the battery and they're not ideal. Battleborn has built in protections for the battery and they recommended this converter, but I'd still like it to be tuned a bit better.


This product is great. It took a little bit of time to put in but was worth it. No more overheating or humming as the previous converter had been doing. There is even extra spots available if you want to add another breaker. The color coding on the wires made it easy to hook up without tangling the cables. I would highly recommend this product.

The converter is still working well a year later. Never gets hot or hums. Fantastic replacement for my needs.
Kim M - 12/23/2021


Perfect replacement. Works like a charm. Easy to wire up.


I bought this converter to replace the stock converter in my Geo Pro trailer. I switched to a lithium battery, and this converter is built with a switch so in works with both lead acid and lithium batteries. Used the trailer full time last year for 11 weeks and the converter worked flawlessly.


good packaging and the unit is install and works as advertized


Very easy to replace and works GREAT!


I’ve ordered from a trailer multiple times. Pretty disappointing when I received a converter worth a few hundred dollars not packaged properly. I’m just hoping that it works so that I don’t have to send it back. But on this occasion it was very surprising/disappointing. Anyways, that’s my two bits!

I apologize for the state of your package. Please let customer service know if there is anything wrong with it within a 60 day timeframe.
-- Etrailer Expert Sierra K - 09/13/2021


Came quick, easy to install, improvement over the old one. Definitely these are the folks to go to.


Ship in time and package was packed good


The power box was good .when we loaded out the motor home,somehow they pulled the main power cable apart inside the casting and you could not see it .So now I have a spare box .Still have not used the motor home since,this stupid lockdown we cannot go no where


Last two items I’ve ordered from etrailer, have arrived BROKEN. Poor packaging is the issue. I’m growing tired of having to contact you to sort out your issues, causing my business costly delays. Next one will be accompanied by an invoice. Wake up etrailer.


Updated a 2012 Carson FunRunner to LiFePO4 and this thing worked great!!


Ordered what experts suggested!
Got it
all installed and everything is working great.
It was a little smaller than the original box but we framed the new one in and it looks great too.


Took me about 2 days to install had to figure out all the color and number codes on on the DC side, but after figuring out and connecting, everything all works great. My battery is now staying charged, yahoo!


Some what easy to install for a first timer such as myself. Great support when I did have questions.


Easy to install for anyone.


It was actually pretty easy to install and I believe an exact replacement. I took a lot of pictures first then replaced it. Thanks guys! Great experience and saved a huge bundle doing it myself!


This will be the perfect solution to upgrade our trailer.


Replaced a 16 year old converter that had mostly unfiltered dc circuits, which would measure at 12v at no load but, to my surprise, would rise to 23v under load. This caused LED light bulbs to run very hot and caused the max-air fan to stop running. Bought this new converter and it fixed the 12 system issues! The LED’s stay cool, the fan works and the kingdom is at peace. I also like the battery charging intelligence that keeps the house battery charged without overcharging.


Very friendly very helpful they did a great job I got my package very quickly I am very happy with their service.

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