Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Newmar 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 01-27-2023, 07:04 AM   #1
Senior Member
 
Join Date: Jun 2018
Posts: 294
Replacing house batteries with lithium.

I am thinking of replacing the four 6 volt batteries with a pair of 100ah Lipo batteries. Who has done this and what batteries have you used? Have they worked out for you?
Fefanatic 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 01-27-2023, 10:08 AM   #2
Junior Member
 
Join Date: Jan 2023
Posts: 1
Your 6 6volt batteries are probably 660 amp hours of battery, a pair of 100 amp lithiums are going to be 200 amp hours. Remember that gives you a smaller "gas tank" to pull from. You won't last as long, but lithiums will let you charge and discharge faster.

You will need a proper charging system. If you are in a motorhome, you would need a charge controller from the engine that is for lithium batteries, also the converter or inverter/charger would need to have lithium settings. Not usually too expensive on the newer stuff, since everything is coming with those settings now. Older units will probably get expensive switching out the charging components.
jjensen22 is offline   Reply With Quote
Old 01-27-2023, 12:08 PM   #3
Senior Member
 
Join Date: Jul 2021
Location: Vermont
Posts: 356
Comparing amp hour rating is tricky business. My rule of thumb is that 100 amp hour of lithium is worth 200 amp hour of flooded. Based on my usage, we run an inverter for fridge. Flooded loose a lot of capacity the higher the amp draw. See Peukert's law. The rating on the batteries is based on a 5 amp draw. So if all you use are LED lights your math might be different. You also have to factor in how far you want to discharge your batteries. I went with a 12 volt system so I can easily add a battery if my needs require it. Only way to know is to start somewhere and get YOUR real world usage out of it. If you do and need more then add more when you can.

https://en.m.wikipedia.org/wiki/Peukert%27s_law
__________________
Travis
2021 Coachmen Mirada 35es
Tskadberg is offline   Reply With Quote
Old 01-27-2023, 12:43 PM   #4
Senior Member
 
Join Date: Jul 2014
Posts: 33,294
Quote:
Originally Posted by Tskadberg View Post
Comparing amp hour rating is tricky business. My rule of thumb is that 100 amp hour of lithium is worth 200 amp hour of flooded. Based on my usage, we run an inverter for fridge. Flooded loose a lot of capacity the higher the amp draw. See Peukert's law. The rating on the batteries is based on a 5 amp draw. So if all you use are LED lights your math might be different. You also have to factor in how far you want to discharge your batteries. I went with a 12 volt system so I can easily add a battery if my needs require it. Only way to know is to start somewhere and get YOUR real world usage out of it. If you do and need more then add more when you can.

https://en.m.wikipedia.org/wiki/Peukert%27s_law
Some of your statements are wrong .

The 20 hour rating on flooded batteries is based on 5 amps per 100 AH. 200 AH bank =10 amps and on up.

Flooded batteries can safely be cycled down to 30% SOC, so tha/gives you 70% usable capacity.

Lithium can be cycled to 0% but then they shut off. Now you have nothing. So with the proper charger that will bring them up to 100%, you will safely have about 90% usable capacity.

If your using a flooded battery charging system, then your batteries are only charging to 80%. Now you have 70% usable capacity.
twinboat is online now   Reply With Quote
Old 01-30-2023, 06:07 AM   #5
Senior Member
 
Join Date: Jul 2021
Location: Vermont
Posts: 356
Quote:
Originally Posted by twinboat View Post
Some of your statements are wrong .

The 20 hour rating on flooded batteries is based on 5 amps per 100 AH. 200 AH bank =10 amps and on up.

Flooded batteries can safely be cycled down to 30% SOC, so tha/gives you 70% usable capacity.

Lithium can be cycled to 0% but then they shut off. Now you have nothing. So with the proper charger that will bring them up to 100%, you will safely have about 90% usable capacity.

If your using a flooded battery charging system, then your batteries are only charging to 80%. Now you have 70% usable capacity.


Can you be more specific? Sounds like we are in agreement to me.
__________________
Travis
2021 Coachmen Mirada 35es
Tskadberg is offline   Reply With Quote
Old 01-30-2023, 12:08 PM   #6
Junior Member
 
Join Date: Jan 2023
Posts: 8
battery Lithium replacement

Quote:
Originally Posted by Fefanatic View Post
I am thinking of replacing the four 6 volt batteries with a pair of 100ah Lipo batteries. Who has done this and what batteries have you used? Have they worked out for you?

Hey, Battle Born are the best but Lion and Dave's RV channel on YT has a newer brand. Dave brand https://www.timeusbpower.com/?ref=C5G... Discount Code - " Dave4 "
5 year warranty $649.99 plus if you use Dave code Dave4 you get a discount you get a $26 discount off the price. He had not problems. The other one is LItime batteries https://www.litime.com/ Newmar using these now instead of Dargonfly aka Battle Born.

The one thing is temperature lithium's don't like really hot and cold so placement in an area where the temps are stable. the weight difference is really a lot. these are 80 pounds for 400amp hours 160lbs compared to 500lbs. I would have a company install the system check around



MYK

Florida
Myk55 is offline   Reply With Quote
Old 01-30-2023, 02:13 PM   #7
Member
 
Join Date: Apr 2020
Posts: 77
I went Life Blue 600amp. made no changes to what was there except enclosed battery compartment
__________________
Andre
2020 3709 Dutchstar
Oregon
Guidol is offline   Reply With Quote
Reply

Tags
batteries, house batteries, lithium



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
Replacing existing 6v flooded batteries. AGM or Lithium? ADiamond Newmar Owner's Forum 11 08-12-2022 09:15 AM
Lithium batteries with non-lithium. UncaMike RV Systems & Appliances 4 09-26-2021 12:49 PM
Batteries to lithium or not to lithium sciblades RV Systems & Appliances 18 03-21-2021 10:40 PM
RV Lithium Lite & Lithium Super Upgrade Systems - Mike Mas Idleup iRV2.com General Discussion 10 02-20-2021 04:26 PM
Replacing standard batteries with lithium on a 2021 Grand Design TT MapleKing RV Systems & Appliances 2 09-30-2020 02:26 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 03:24 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.