|
|
09-05-2017, 09:51 PM
|
#41
|
2 Rivet Member
2017 25' Flying Cloud
San Diego
, California
Join Date: Jun 2017
Posts: 26
|
Quote:
Originally Posted by dasams
I bought the PD4655V and pendent from bestcharger.com. The inexpensive pendent shows the current charging state as is a nice feature. If you use the pendent, then you can retain the stock fuse board which made the installation a piece of cake. Randy was also very helpful in walking me through it. Dave
|
Do i need this pendant to? I don't know squat about electronics so I would like to avoid things like fuse boards etc.
When you say the stock fuse board what do you mean by this? is this where you get the reading of how charged the batteries are?
Where did you put the pendant?
|
|
|
09-06-2017, 04:47 AM
|
#42
|
Retired.
Currently Looking...
.
, At Large
Join Date: Jun 2003
Posts: 21,276
|
For those worried about their batteries, and don't want to update their converter, I offer this simple, inexpensive solution:
https://jet.com/product/detail/bdd46...5-f736ee43a83c
__________________
Meddle not in the affairs of dragons, for you are crunchy, and taste good with ketchup.
Terry
|
|
|
09-06-2017, 06:20 AM
|
#43
|
Rivet Master
1971 25' Tradewind
1993 34' Excella
Currently Looking...
Estancia
, New Mexico
Join Date: Feb 2005
Posts: 7,743
|
Quote:
Originally Posted by on the fly
Does it matter which one i get? Meaning, the airstream is rated to 30 amps. If i go with a 35 or higher will it affect anything?
|
Good point. I also have a 30 amp Airstream. I went with the Intellipower 45 amp model, mainly because I got a good deal. Randy at Best Converter is very helpful. It's somewhere between rocket science and changing a light bulb. You could use a RV service tech, but make sure he knows what he is doing.
__________________
Sail on silver girl. Sail on by. Your time has come to shine.
|
|
|
09-06-2017, 07:41 AM
|
#44
|
4 Rivet Member
Palm Desert
, California
Join Date: Jul 2016
Posts: 301
|
Quote:
Originally Posted by on the fly
Does it matter which one i get? Meaning, the airstream is rated to 30 amps. If i go with a 35 or higher will it affect anything?
|
You want the 55 amp model. I don't know the why's. Talk to Randy.
__________________
2006 Cayenne S with V8, air suspension, factory tow
2018 FC 27 FB
2017 FC 25 RB Gone
|
|
|
09-06-2017, 07:54 AM
|
#45
|
4 Rivet Member
Palm Desert
, California
Join Date: Jul 2016
Posts: 301
|
Quote:
Originally Posted by on the fly
Do i need this pendant to? I don't know squat about electronics so I would like to avoid things like fuse boards etc.
|
With the pendent, you can see the current state of operation at a glance:
Constant light = boost mode
Flash = normal mode
Quick flash = storage mode
Quote:
Originally Posted by on the fly
When you say the stock fuse board what do you mean by this?
|
When you order the PD4655V, you get a controller and a fuse board. I replaced the controller but left the stock fuse board. I recall the latter is only possible if you also get the <$20 pendent.
Quote:
Originally Posted by on the fly
Where did you put the pendant?
|
It sticks out of the panel door. Here's a crapy iPhone picture of an upside down pendent (I saw no reason to use the two sided tape).
__________________
2006 Cayenne S with V8, air suspension, factory tow
2018 FC 27 FB
2017 FC 25 RB Gone
|
|
|
09-06-2017, 09:16 AM
|
#46
|
Half a Rivet Short
2017 30' Classic
2022 Interstate 24X
Carlisle
, Pennsylvania
Join Date: May 2017
Posts: 15,743
|
Quote:
Originally Posted by dasams
I have no expertise in this area but I learned Ohm's law in freshman physics that current is voltage divided by resistance. So I don't understand how a controller can vary the current without changing the voltage or resistance.
One other point is that my PD4655V charges at 13.1 V when in maintain mode vs 13.7 of the OEM unit.
I'm here to learn, Dave
|
Hi
The converter chargers are all switching regulator circuits. They monitor the current being pulled and vary the voltage so that there is not "to much" current going into the battery.
How much is to much?
That depends a bit on which battery type you have and what the battery manufacturer rates it at. In general capacity / 4 is not a bad number. If you have two 100AH batteries, capacity would be 200 AH. Capacity / 4 would be 50 amps. Oddly enough, this is one of those cases where less may not be a good idea. Your batteries may last longer when charged "harder". Yes, that's weird ....
Bob
|
|
|
09-06-2017, 09:24 AM
|
#47
|
Rivet Master
1955 22' Safari
Laredo
, Texas
Join Date: Nov 2013
Posts: 1,342
|
AC vs DC
Quote:
Originally Posted by Lumatic
Good point. I also have a 30 amp Airstream. I went with the Intellipower 45 amp model, mainly because I got a good deal. Randy at Best Converter is very helpful. It's somewhere between rocket science and changing a light bulb. You could use a RV service tech, but make sure he knows what he is doing.
|
This is commonly misunderstood. "30 amp" trailers are rated for 30 amps of AC power (or 30 amps x 120 volts = 3600 watts). 45 amp converters put out 45 amps of DC power (45 amps x 14 volts = 630 watts).
|
|
|
09-06-2017, 08:55 PM
|
#48
|
4 Rivet Member
Palm Desert
, California
Join Date: Jul 2016
Posts: 301
|
Quote:
Originally Posted by uncle_bob
They monitor the current being pulled and vary the voltage so that there is not "to much" current going into the battery.
|
The OEM unit in my 2017 FC put out 13.7 V no matter what. At least I never saw a different number and i pushed the battery button a hundred times over the past year.
I picked up our 2018 FC *today* and it's putting out 13.6 V. I'm going to monitor it and if it doesn't drop, I'm going to replace it. FYI the 2018 FC's are supposed to have a multi-stage controller, unlike earlier models. I'm skeptical.
__________________
2006 Cayenne S with V8, air suspension, factory tow
2018 FC 27 FB
2017 FC 25 RB Gone
|
|
|
09-06-2017, 09:40 PM
|
#49
|
Rivet Master
Currently Looking...
Walnut Creek
, California
Join Date: May 2015
Posts: 3,952
|
OK - a story - just sold a boat this past spring. Had it for several years. Batteries in it were toast soon after we took possession. Everyone said a multi-stage charger was needed as the OEM unit was going to boil away the cells. Standard approach to keep the batteries alive, was to run the refrigerator and keep the charger on. Fellow across from us and our broker followed that protocol. It works. Batteries see less voltage as there is a load on all the time.
We turned the charger off and only ran it for a few hours every couple of weeks. Refrigerator was not run. Our batteries lasted over five years, so that worked too.
No, you don't need the multi-stage converter, if you take care not to abuse the batteries. Biggest problem is allowing them to be run down below 50% charge.
We found that storage was the source of that problem for us as we did not have power when Glimmer was tucked away. Solution was a battery disconnect switch. We put her away with a full charge on the batteries. She has been put up for about six months. Picked up today and meter was at 12.4 volts. Our disconnect appears to have done the trick.
We did replace the batteries and upgraded to the multi-stage converter. Better charging seems to help get us up to full charge. Recommend getting the pendant and not installing the new board. OEM board has junction block that allows a crushed wire connection. New one has different blocks and needs lugs added to the wires for an appropriate connection.
Good luck on your upgrades. Pat
|
|
|
09-07-2017, 08:57 AM
|
#50
|
Half a Rivet Short
2017 30' Classic
2022 Interstate 24X
Carlisle
, Pennsylvania
Join Date: May 2017
Posts: 15,743
|
Quote:
Originally Posted by dasams
The OEM unit in my 2017 FC put out 13.7 V no matter what. At least I never saw a different number and i pushed the battery button a hundred times over the past year.
I picked up our 2018 FC *today* and it's putting out 13.6 V. I'm going to monitor it and if it doesn't drop, I'm going to replace it. FYI the 2018 FC's are supposed to have a multi-stage controller, unlike earlier models. I'm skeptical.
|
Hi
You could easily be sitting there with 13.7V and zero current into the battery. In that case, it does not matter.
The "stock" chargers looked at load first. Once it dropped below some point (like 1A) they decided that the charge phase was winding down.
Next they started a timer. It chugged along for something like two days. At that point they would drop back the voltage.
The obvious question is - would you ever get / stay below 1A (or whatever the limit was) for two days?
So technically a three stage charger. Given the loads in a trailer maybe not a perfect implementation of the third stage. Most certainly *not* a single stage.
Bob
|
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
Similar Threads
|
Thread |
Thread Starter |
Forum |
Replies |
Last Post |
Terrible Reception
|
Pat Cassity |
Audio, Video & TV |
42 |
04-02-2015 06:13 AM |
Terrible Mold Everywhere
|
piccio |
General Interior Topics |
8 |
03-01-2004 06:33 AM |
|
Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|