RV.Net Open Roads Forum: Tech Issues: Mixing battery types??

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Tech Issues

Open Roads Forum  >  Tech Issues

 > Mixing battery types??

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Sponsored By:
Mmaxed

Montana

Senior Member

Joined: 02/08/2007

View Profile


Offline
Posted: 06/06/22 04:26pm Link  |  Quote  |  Print  |  Notify Moderator

I want to add more battery capacity to our hauler. They will have to go in the pass through. Would just stay with lead acid, but venting will be a pain. Can I add Lifepo 4 or sealed lead acid and be OK?

Lwiddis

Southern California :(

Senior Member

Joined: 08/12/2016

View Profile



Good Sam RV Club Member

Offline
Posted: 06/06/22 04:31pm Link  |  Quote  |  Print  |  Notify Moderator

You shouldn’t “add” Lithium to any other battery type but most say you can add a different brand Lithium battery provided it’s the same chemistry.


Winnebago 2101DS TT & 2022 Chevy Silverado 1500 LTZ Z71, WindyNation 300 watt solar-Lossigy 200 AH Lithium battery. Prefer boondocking, USFS, COE, BLM, NPS, TVA, state camps. Bicyclist. 14 yr. Army -11B40 then 11A - (MOS 1542 & 1560) IOBC & IOAC grad


pianotuna

Regina, SK, Canada

Senior Member

Joined: 12/18/2004

View Profile


Offline
Posted: 06/06/22 04:43pm Link  |  Quote  |  Print  |  Notify Moderator

Mmaxed,

You can do it if you have switches to isolate the batteries from each other.

You could do it with agm or sio2.

using sealed lead acid would require the wiring to be balanced. (or use switches).

It is really best to keep to the same type of battery.


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp-hours of Telcom jars, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

Lwiddis

Southern California :(

Senior Member

Joined: 08/12/2016

View Profile



Good Sam RV Club Member

Offline
Posted: 06/06/22 05:08pm Link  |  Quote  |  Print  |  Notify Moderator

Bite the bullet and buy a Lithium battery of sufficient capacity…200, 300, 400 amps. Issue and concerns over.

Mmaxed

Montana

Senior Member

Joined: 02/08/2007

View Profile


Offline
Posted: 06/06/22 06:04pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks Don, that is what I thought I knew, if you know what I mean? Have to decide which way to go. 400 amp hours of Lifepo4 isn't cheap.

Mmaxed

Montana

Senior Member

Joined: 02/08/2007

View Profile


Offline
Posted: 06/06/22 06:14pm Link  |  Quote  |  Print  |  Notify Moderator

OK, since I am asking stupid questions instead of searching and sorting through a bunch of ****. If I go to Lifepo4 bateries, do I need to change my charging system?

corvettekent

Marysville, WA

Senior Member

Joined: 09/21/2014

View Profile



Good Sam RV Club Member

Offline
Posted: 06/06/22 07:35pm Link  |  Quote  |  Print  |  Notify Moderator

Mmaxed wrote:

OK, since I am asking stupid questions instead of searching and sorting through a bunch of ****. If I go to Lifepo4 bateries, do I need to change my charging system?


I am going through the change to Lifepo4 now. It is not just a simple exchange, plan on spending more money. I had four 6 volt flooded lead acid batteries, 470 AH. I bought one 206 AH Lifepo4 thinking that it would have plenty of power but it would not power my microwave, so I had to buy a second 206 AH Lifepo4. The issue is with the BMS. I have 860 watts of solar on the roof and my MPPT charge controllers will work with the new batteries but my PD converter will not.


2022 Silverado 3500 High Country CC/LB, SRW, L5P. B&W Turnover Ball, Companion Hitch.

2004 32' Carriage 5th wheel. 860 watts of solar MPPT, two SOK 206 ah LiFePO4 batteries. Samlex 2,000 watt Pure Sine Wave Inverter.


Microlite Mike

NW Washington State

Full Member

Joined: 10/31/2021

View Profile


Offline
Posted: 06/06/22 07:45pm Link  |  Quote  |  Print  |  Notify Moderator

Mmaxed wrote:

OK, since I am asking stupid questions instead of searching and sorting through a bunch of ****. If I go to Lifepo4 bateries, do I need to change my charging system?


The answer is "yes and no". If you do not have solar charging then then you will need to change the converter/charger if it doesn't have a Lithium profile setting.

If you have solar charging then no, most controllers have a setting for Lithium/LiFePo4 batteries. The conventional converter will charge the LiFePo4 batteries to ~90% SOC and the Solar Controller will top them off and handle cell balancing, to a SOC of 100%.

Many are doing this unless they absolutely need a 100% charge right away or have no solar panels mounted.


"Knowledge is realizing that the street is one-way, wisdom is looking both directions anyway."


~ Albert Einstein

pianotuna

Regina, SK, Canada

Senior Member

Joined: 12/18/2004

View Profile


Offline
Posted: 06/06/22 09:12pm Link  |  Quote  |  Print  |  Notify Moderator

Mmaxed wrote:

OK, since I am asking stupid questions instead of searching and sorting through a bunch of ****. If I go to Lifepo4 bateries, do I need to change my charging system?


Li are fussy. https://www.solacity.com/how-to-keep-lifepo4-lithium-ion-batteries-happy/

Li don't enjoy cold

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 

Open Roads Forum  >  Tech Issues

 > Mixing battery types??
Search:   Advanced Search

Search only in Tech Issues


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2023 CWI, Inc. © 2023 Good Sam Enterprises, LLC. All Rights Reserved.