Free 7 Day Trial RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Winnebago Industries Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 11-27-2021, 08:02 PM   #1
Junior Member
 
Join Date: Nov 2020
Location: NW Washington
Posts: 15
Lithium Upgrade

Good evening, and Happy Thanksgiving! I pray all had a blessed time with family and friends.
We own a 2005 Journey 36G. It has the original Dimensions inverter. I am wanting to upgrade to lithium batteries, but, due to cost, want to upgrade the inverter, and eventually, solar, in stages.
1) does the Dimensions inverter/charger support lithium
2) is there a mod I need to do to the alternator charging from the engine?
3) on the wiring diagram, I see a charger, but cannot actually find it. Any ideas?
Thanks very much!
jonnshell30 is offline   Reply With Quote
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!

Old 11-27-2021, 11:31 PM   #2
Senior Member
 
Ron Postma's Avatar
 
Winnebago Owners Club
Freightliner Owners Club
Join Date: Aug 2006
Location: On the open road
Posts: 703
1. Your 2005 inverter/charger will not properly support Lithium batteries
2. You need to install a Lithium BIM (Battery isolation Manager) or a DC to DC charger
3. Your charger is the inverter/"CHARGER"

1A You could disable the charger in the Inverter/charger and install a separate Lithium compatible charger.
__________________
2014 Winnebago Tour 42QD
2014 Honda CRV Toad W7REP
WiFiRanger Elite AC Pack
Ron Postma is offline   Reply With Quote
Old 11-28-2021, 06:05 PM   #3
Junior Member
 
Join Date: Aug 2012
Location: Novato, CA
Posts: 11
Lithium upgrade changes

I upgraded to 2 Lithium batteries from Costco, mainly because my controller/charger was burning up batteries by overcharging. Also, I am not into getting down on the floor to check the batteries. The battery compartment on my 2008 Itasca Cambria is below the floor, so had to close up some of the openings with tape so far. Upgraded the converter/charger with a compatible replacement (about $200) that has a jumper to support Lithium. I bought a DC-DC charger but have not installed it yet, but I did disconnect charging from the chassis alternator.
The Lithium charges faster and has much more usable amps, so plugging in periodically or running the generator will charge the batteries. I have not installed any solar at this point.
I also lost the ability to cross-connect engine and house batteries for an alternate battery boost. I bought a combo battery jump unit with air compressor so that I can jump my engine battery if I need to.
__________________
Larry and Marla
2008 Itasca Cambria 29H
2014 Honda CRV
larrye743 is offline   Reply With Quote
Old 11-29-2021, 09:52 PM   #4
Senior Member
 
Isaac-1's Avatar
 
Join Date: Jun 2016
Location: SW Louisiana
Posts: 6,962
I just recently upgraded my 2002 Safari Trek to LiFePo4, so was where you are now not very long ago. I ended up going with a pair of 200 AH (actually 210 AH) drop in batteries with bluetooth smart BMS, along with a 50 amp Renogy DC-DC charger with MPPT solar charge controller built in (I already had 400 watts of solar on the roof and an older PWM solar charge controller). In my case I was able to use my existing Progressive dynamics converter which was installed by the previous owner to replace the dead Freedom Combi-10 inverter/charger.


Along the way doing my research I found a lot of people will tell you that you must have a Lithium specific charger/converter, this is often not the case, though it depends on the charge profile of your specific brand and model of unit, and if it will play nice with LiFePo4 batteries regardless if it was "designed" for lithium or not.


Browsing over the Dimension Inverter manual dated 2006, it appears there is no way to disable conditioning mode which runs about every 30 hours, and outputs up to 15VDC, which is too high for LiFePo4 batteries. If not for this, it looks like the sealed lead acid charging profile would work for Lithium batteries, if the charger senses them correctly.


Ike
__________________
2002 Safari Trek 2830 on P32 Chassis with 8.1L w/ 400 watts solar 420Ah LiFePo4
2017 Jeep Cherokee Overland & 2007 Toyota Yaris TOADs with Even Brake,
Demco Commander tow bar and Blue Ox / Roadmaster base plates
Isaac-1 is online now   Reply With Quote
Old 11-30-2021, 06:40 PM   #5
Junior Member
 
Join Date: Nov 2020
Location: NW Washington
Posts: 15
Thanks everyone.
So what it sounds like is get a new inverter/charger to replace the original equipment, and a DC-DC charger to splice into the alternator connection. Most batteries come with BMS installed, so that part is covered. The only thing I'd have left is solar panels and charge controller when I want to install the solar side.
I appreciate all of the info. I have read articles and watched yt videos, but most make it quite confusing.
jonnshell30 is offline   Reply With Quote
Old 11-30-2021, 08:04 PM   #6
Senior Member
 
Join Date: Jul 2014
Posts: 29,428
You don't want to limit the alternator output to the chassis battery and systems, only the house batteries.

The house batteries are charged from the charging chassis batteries, not from the alternator.

The battery to battery charger needs to go in that circuit. That's also the circuit used for boost starting and uses battery cable size wires.
twinboat is online now   Reply With Quote
Old 12-01-2021, 09:22 AM   #7
Junior Member
 
Join Date: Nov 2020
Location: NW Washington
Posts: 15
Quote:
Originally Posted by twinboat View Post
You don't want to limit the alternator output to the chassis battery and systems, only the house batteries.

The house batteries are charged from the charging chassis batteries, not from the alternator.

The battery to battery charger needs to go in that circuit. That's also the circuit used for boost starting and uses battery cable size wires.
Got it! Thanks for that!!
jonnshell30 is offline   Reply With Quote
Old 12-07-2021, 06:22 PM   #8
Senior Member
 
Kenvb's Avatar
 
Vintage RV Owners Club
Join Date: Jan 2014
Location: Whitecourt.Alberta
Posts: 373
lithium batterys

we have International truck dealers that have 850 amp batteries on sale for $88 plus core.. i put 3 in chassis and 3 in RV part, the old 12 valve cummins turns over so fast now,it starts in seconds,,no more cranking and cranking..and we can cold camp for 7 days before the lights on the battery monitor go down one. 12 days it goes down 2 and i start generator for hour to go back to full charge.
but we only use a 110 TV with power convertor . nothing else 110.
__________________
1992 Itasca 34RQ Suncruiser Diesal 34 ft
Kenvb is offline   Reply With Quote
Old 12-07-2021, 09:04 PM   #9
Senior Member
 
SCVJeff's Avatar
 
Join Date: Dec 2006
Location: Santa Clarita, CA.
Posts: 2,616
Start by upgrading to a top notch inverter/charger. You will be so much happier with a real PSW inverter you can’t imagine. I think the Magnum MS-series can accommodate Lithium with the Custom charge parameters but not sure. My Magnum treats my FLA batteries so well they may never wear out. The smartest thing I did in that coach was pull the Dimensions
__________________
_______________________________

Jeff - WA6EQU
'06 Itasca Meridian 34H, CAT C7/350
SCVJeff is offline   Reply With Quote
Old 12-08-2021, 10:55 AM   #10
Senior Member
 
Join Date: Feb 2017
Location: Riverside, CA
Posts: 124
Send a message via AIM to Our05Winneba
Be careful what others are saying - there is some confusing / misleading information in other replies.

1) Converter. While the OE Dimension unit may work, as others have suggested it is best to upgrade to a Lithium specific converter, such as a Progressive unit.

2) Engine charging. Many others have strongly cautioned against connecting Lithium batteries directly to the engine alternator charging system. This is because Lithium batteries can take a charge much more quickly than FLA batteries, and can easily overtax the alternator - burning it out. That is why so many recommend a DC-DC charger. One has to be correctly wired into your system to ensure all engine charging goes through this unit, but yet still allows the Battery Boost solenoid to work correctly if needed. I got a Renogy unit which works well. Got the smallest 20amp model as that is all I needed because when we travel it is for many hours at a time, and that works great in conjunction with our rooftop solar - which also charges while we drive.

3) Adding solar these days is relatively easy and inexpensive - far cheaper than the LiFePO4 batteries.

4) You should really add a good battery monitor (such as the Victron 712 - though other similar Chinese made models are also available) because you really need to know an accurate charge state of your batteries. This type of monitor provides tons of other information (such as current rate of charge / discharge) and is really worthwhile. Unlike FLA batteries it is much more difficult to determine state of charge on Lithium batteries by voltage alone - so this type of monitor is really needed.
__________________
Rick & Barb
Full Timers
2005 Winnebago Adventurer 37b
Our05Winneba is offline   Reply With Quote
Old 12-08-2021, 11:06 AM   #11
Senior Member
 
Isaac-1's Avatar
 
Join Date: Jun 2016
Location: SW Louisiana
Posts: 6,962
I agree mostly with the above post, but would like to add a point:


4B - A separate battery monitor may not be needed if you get a set of batteries with a built in Smart BMS with Bluetooth, as the smart BMS duplicates many of the features of an external battery monitor and will display to your phone or tablet.
__________________
2002 Safari Trek 2830 on P32 Chassis with 8.1L w/ 400 watts solar 420Ah LiFePo4
2017 Jeep Cherokee Overland & 2007 Toyota Yaris TOADs with Even Brake,
Demco Commander tow bar and Blue Ox / Roadmaster base plates
Isaac-1 is online now   Reply With Quote
Reply

Tags
lithium, upgrade



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Lithium batteries with non-lithium. UncaMike RV Systems & Appliances 4 09-26-2021 01:49 PM
Bounder: '16 Bounder Solar and Lithium Upgrade computerguy Fleetwood Owner's Forum 106 06-25-2021 09:01 AM
Batteries to lithium or not to lithium sciblades RV Systems & Appliances 18 03-21-2021 11:40 PM
RV Lithium Lite & Lithium Super Upgrade Systems - Mike Mas Idleup iRV2.com General Discussion 10 02-20-2021 05:26 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 12:28 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, vBulletin Solutions, Inc.