|
08-03-2021, 07:34 PM
|
#1
|
Senior Member
Join Date: May 2021
Posts: 598
|
Another Newbie Question - Charging Chassis Batteries
2021 Ventana 3412. Does the inverter/charger also charge the chassis batteries when powered? If not, what are you all doing to keep them topped off? Battery tender? I have the tiny solar panel on the roof, but I keep it parked under our barn.
Thanks.
|
|
|
|
Join the #1 RV Forum Today - It's Totally Free!
iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!
You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!
|
08-03-2021, 07:43 PM
|
#2
|
Senior Member
Newmar Owners Club Ford Super Duty Owner
Join Date: Oct 2020
Location: Florida
Posts: 558
|
Yes. House batteries will be topped first then chassis battery if needed. All automatic.
__________________
2021 Newmar Bay Star 3626
|
|
|
08-03-2021, 07:47 PM
|
#3
|
Member
Join Date: Aug 2021
Posts: 48
|
Newmar normally fits a Xantrex Freedom XC (Inverter/Charger) so yes. It you look in your storage bay you will find the make model. Its often in the passengers side first front bay (but I don't know for sure on the Ventana.
If it is an XC it will charge the chassis when hooked up to shore power. When on, so will your generator, which if your not using your coach should be run around once a month for 30 minutes with some load on it (AC's).
Hope thats of help.
|
|
|
08-04-2021, 08:46 PM
|
#4
|
Senior Member
Join Date: May 2021
Posts: 598
|
Quote:
Originally Posted by BigMC
Newmar normally fits a Xantrex Freedom XC (Inverter/Charger) so yes. It you look in your storage bay you will find the make model. Its often in the passengers side first front bay (but I don't know for sure on the Ventana.
If it is an XC it will charge the chassis when hooked up to shore power. When on, so will your generator, which if your not using your coach should be run around once a month for 30 minutes with some load on it (AC's).
Hope thats of help.
|
Appreciate the info. Our Ventana has a Magnum Energy inverter/charger. I let it get to full charge on the house batteries today, but I never did see charge voltage go to the chassis batteries. They do not show in the Magnum remote panel - only in the remote that controls our HVAC and has the tank levels, etc. I'll have to spend some more time with it...
__________________
Dan & Susan
2021 Newmar Ventana 3412 - Freightliner
2020 Rockwood GeoPro G19FBS
|
|
|
08-04-2021, 08:59 PM
|
#5
|
Senior Member
Newmar Owners Club Ford Super Duty Owner
Join Date: Oct 2020
Location: Florida
Posts: 558
|
You should have a BIM. I don’t know if this is the exact model you have, but the last paragraph describes the operation. It looks like once charged, the chassis battery needs to drop to 80% charge before it will be charged again by the Magnum unit. Not sure if this explains what you are seeing or not.
__________________
2021 Newmar Bay Star 3626
|
|
|
08-05-2021, 02:14 AM
|
#6
|
Senior Member
Join Date: Jul 2014
Posts: 35,441
|
The Inverter/Charger is only connected to and charges the house batteries.
An isolation system ( BIM ) handles the bridging between the house and chassis battery for charging as needed.
|
|
|
08-05-2021, 04:32 AM
|
#7
|
Senior Member
Newmar Owners Club
Join Date: May 2020
Location: Fort Lauderdale, Fl
Posts: 1,143
|
I have had a couple of BIMs go bad. The BIM in our Kountry Star was defective from day one and replaced by Newmar under warranty.
I discovered the problem when I tested the BIM by discharging batteries.
Here is the simple process I followed:
1. Unplug and generator, engine off - no charging.
2. Record you house and chassis battery levels
3. Leave a house load on - i.e. leave some lights on overnight.
4. Check battery level; the house batteries should drop from the house load - the chassis battery should be close to what you recorded in step 1. If the chassis batteries are closer to the house batteries then you BIM is not isolating the two properly.
__________________
2022 Dutch Star 4369 FL Towing 2022 GMC Sierra 1500
Chris & Lee, Finnegan & Kirby (Double Doodled)
2020 Kountry Star 3709 towing Equinox.
|
|
|
08-05-2021, 12:49 PM
|
#8
|
Member
Newmar Owners Club
Join Date: Dec 2019
Location: Babcock Ranch, FL
Posts: 48
|
Hopefully the OP doesn't mind me adding to this post but my problem may help both of us understand things better.
I also own a Ventana (2020 3717) with the same Magnum system and also park my unit under cover so the solar system doesn't do anything. However, I leave my coach plugged in to 50A power when stored. Recently, I couldn't enter my coach using the key fob. The bay door locks also didn't work. After some experimentation, I realized the house battery was dead. But I was able to use the battery boost switch on the dash to get the coach started. After a while, the chassis batteries must have charged enough so that everything started working again.
I'm guessing this isn't a problem with the BIM as I was able to use battery boost. But perhaps this isn't the case? If so, any suggestions as to what I may be doing wrong or what may be broken?
__________________
"EVA" - 2020 Newmar Ventana 3717
2020 Jeep Gladiator tow
|
|
|
08-05-2021, 01:02 PM
|
#9
|
Senior Member
Join Date: May 2021
Posts: 598
|
I started the refrigerator on the inverter to run the batteries down. Chassis batteries were at 12.49 when I started - will let the house get down to say 12.1, check the chassis, and then plug it back into shore power...
__________________
Dan & Susan
2021 Newmar Ventana 3412 - Freightliner
2020 Rockwood GeoPro G19FBS
|
|
|
08-05-2021, 04:09 PM
|
#10
|
Senior Member
Join Date: May 2021
Posts: 598
|
One strange thing I noticed is that the Magnum controller/remote showed it was pushing 23+/- amps to the batteries, but my power control center only showed 7 amps being pulled through shore power?
__________________
Dan & Susan
2021 Newmar Ventana 3412 - Freightliner
2020 Rockwood GeoPro G19FBS
|
|
|
08-05-2021, 04:59 PM
|
#11
|
Senior Member
Join Date: Jul 2014
Posts: 35,441
|
12 volt amps are 10 times what 120 volt amps are.
Your charger will draw about 3 amps 120 volts to charge 30 amps at 12 volts.
|
|
|
08-06-2021, 02:03 PM
|
#12
|
Senior Member
Join Date: May 2021
Posts: 598
|
Update. So I ran the batteries down overnight - had the refrigerator running on the inverter for about 20 hours. House batteries down to 12.07 and the chassis batteries were down to 12.35 (not sure what the draw is on the chassis batts). Turned power back on, and the I/C seemed to charge the chassis batteries first, and it later went to bulk charge on the house batteries. However, the chassis batteries do not show as a separate bank on the Magnum remote. I saw that their charge state went to full first in the main control panel.
__________________
Dan & Susan
2021 Newmar Ventana 3412 - Freightliner
2020 Rockwood GeoPro G19FBS
|
|
|
|
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
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|