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Old 10-07-2009, 11:04 AM   #1
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Should I replace the converter on a new Airstream

I'm looking to trade my existing TT for a new Airstream (perhaps the new Flying Cloud 30'). My question is about the installed converter that comes standard with the trailer. I believe Airstream is using a Parallax 7300 series unit which if I understand properly uses only a single stage battery charger.

Have any of you had problems with cooking the batteries?
Has anyone changed their converter/charger to maybe a Progressive Dynamics one?

Thanks in advance,
Ron
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Old 10-07-2009, 11:07 AM   #2
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If you have the Progressive Dynamics defiantly change it out. Single stage chargers do cook batteries. The Wizard that is available for the Progressive is great if you store your rig plugged in.
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Old 10-07-2009, 11:16 AM   #3
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I can't store my Safari at home. I have a private rental space without power. I plug in when I bring it back to the house getting ready for an outing. As recommended for northern climates, I pull the batteries in the winter and bring them into a heated space. They get a charger put on them once a month during the winter.

I've had 4+ full seasons with the Parallax and OEM lead-acid batteries. Only at the end of this summer have the batteries gotten weak. Now is time for new batteries. I definitely won't go to the expense of AGMs having had this success. We travel a lot and change locations when we're camping -- usually when the gray tank fills. We don't squat down in a park and stay plugged in weeks at a time.

See how you use your unit and maybe consider this change later? I read all these threads and toss around the idea of a 3-stage converter but don't feel my usage patterns justify that at this point.
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Old 10-07-2009, 11:37 AM   #4
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Quote:
Originally Posted by Rawn77 View Post
...I believe Airstream is using a Parallax 7300 series unit which if I understand properly uses only a single stage battery charger...
hi ron

a/s is using 2 different models/series of P-lax charger/converters.

my understanding is that they are both 2 stage chargers...
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without know HOW you plan to use (or store) the trailer,

and HOW it will be equipped (solar, inverters, battery type /# )...

it's hard to opinion on changing the p-lax to something else.
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with solar, 2 grp 27 agms, LOTS of camping (and boondocking) and plugged in 24/7 while NOT camping...

the p-lax unit in my stream lasted ~4 years and died.

worked fine for those years and provided everything needed from a c/c unit.
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after it crapped out replacement was a 3 stage (bulk, kick down, float) unit with MORE amp capacity, as the solar and battery bank expands.
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last issue is the warranty on the new stream and internals.

cheers
2air'
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Old 10-07-2009, 11:48 AM   #5
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Quote:
Originally Posted by Rawn77 View Post
I'm looking to trade my existing TT for a new Airstream (perhaps the new Flying Cloud 30'). My question is about the installed converter that comes standard with the trailer. I believe Airstream is using a Parallax 7300 series unit which if I understand properly uses only a single stage battery charger.

Have any of you had problems with cooking the batteries?
Has anyone changed their converter/charger to maybe a Progressive Dynamics one?

Thanks in advance,
Ron
Hi Ron,
You need to find the exact model Parallax you are getting. I suspect it will have the 2 stage option.
Here is the info on Parallax:
http://www.parallaxpower.com/7300/7300pwrcntr.pdf
If you want good advice on RV chargers, I would recommend:
BestConverter - Converters, Inverters, Electrical Supplies, Electronics
Randy, the owner is a forum member.
My recommendation would be to keep the converter you get with the trailer and get familiar with it before changing.
Regards,
Ken
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Old 10-07-2009, 12:00 PM   #6
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Thanks guys for all your advice.
I store my unit just like CanoeStream, in a private storage area with no power.
I venture out each weekend; half the time going to campgrounds, the other half are boondocking trips.
I'm no thinking of getting the solar package but am thinking of getting 2 more batteries with a 2000w inverter.

I appreciate all your advice.
Thanks guys,
Ron
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