EPDM Coatings
rvupgradestore.com Composet Products
RV Life Magazine RV Park Reviews RV Trip Wizard

Author Topic: replacing the power converter  (Read 348 times)


  • ---
  • Posts: 78
  • trying to be the man my dog thinks I am.....
replacing the power converter
« on: November 16, 2017, 08:46:14 PM »
well, now that I've located and ID'd it........   ::)

I currently have the parallax 7455 converter/charger.......and I'm wondering if I should replace it "like for like" with another 55amp charger, or would it be acceptable to upsize to a 60amp?

My gut is telling me no, wire size is probably the factor, but as I've said, this RV thing and the systems are a bit new to me.

looking at

     Boondocker BD1255C (55 Amp 4-Stage Converter/Charger)

Mike and Valerie- She's retired....I'm close!
1996 Pace Arrow 35J - FORD 460 w/Banks Turbo
2000 Jeep Cherokee TOAD using Roadmaster and Brakemaster system.

Paul 1950

  • ---
  • Posts: 1598
Re: replacing the power converter
« Reply #1 on: November 16, 2017, 08:52:04 PM »
I replaced my 55 amp charger with a 60 amp unit and have no problems. Neither unit charges at max amps for more than a couple of minutes.
Paul S   Iowa
2005 Winnebago Voyage 38J

Charlie 5320

  • ---
  • Posts: 2102
Re: replacing the power converter
« Reply #2 on: November 17, 2017, 07:07:32 AM »
I replaced my old noisy Magnetek 50 amp with Progressive PD9260, wire size was no problem with mine. The PD9260 fully charged my batteries in 24 hours. My old one never did fully charge my batteries, it only put out 12.5 volts and very noisy when doing so. I had several people walk by my coach and asked what it that noise? Good thing that thing was in a basement bay, but it could still be heard inside the coach right after the slides were deployed. I like the PD9260 because you can tell what mode it is in with a glance, flashing green light on the pendulum.
2003 National Dolphin 5320
496  8.1  Workhorse

98 Damon Daybreak 3130
GM Vortech 454  4L80E

Gary RV_Wizard

  • Forum Staff
  • ---
  • *
  • Posts: 63630
  • RVer Emeritus
Re: replacing the power converter
« Reply #3 on: November 17, 2017, 07:54:35 AM »
Anything in that approximate amp size will be fine, so either 55 or 60A is a good choice
Gary Brinck
Summers: Black Mountain, NC
Home: Ocala National Forest, FL

John From Detroit

  • ---
  • Posts: 20843
  • ^My New Home^
    • Diabetics Forum
Re: replacing the power converter
« Reply #4 on: November 17, 2017, 05:45:47 PM »
A good rule for things like this is 10% is nothing.. In fact tolerance is often 20%

So yes you can replace a 55 amp with a 50 or 60 no problem No wire changes needed. IF you need to make any change at all it will be a fuse or circuit breaker.
Nothing adds excitement like something that is none of your business
My Home is where I park it.