Reply
 
Thread Tools Display Modes
 
Old 04-26-2019, 06:46 PM   #1
Bronze Member
 
Join Date: Jun 2018
Location: California
Posts: 26
Default AMG to LiFePo4 ?

Can the Stock AGM battery replaced to one LiFePo4 100Ahbattery by a simple swap in a 2018 Simplicity SRT with an underhood generator (or UHG as some say)
__________________

Whynot is offline   Reply With Quote
Old 04-26-2019, 07:49 PM   #2
Platinum Member
 
Join Date: Jul 2012
Posts: 2,240
Default

Quote:
Originally Posted by Whynot View Post
Can the Stock AGM battery replaced to one LiFePo4 100Ahbattery by a simple swap in a 2018 Simplicity SRT with an underhood generator (or UHG as some say)
Where is the AGM located? If inside the van then you can use that location for the lithium. If under the van then you need to worry about low and high temperatures along with the mounting if it is not compatible with the lithium.

Assuming the inverter/charger, solar controller, and Balmar regulator for the under hood generator have charge profile options that are acceptable for the drop in lithium then it is an easy swap after you set the correct charge profiles.
__________________

gregmchugh is offline   Reply With Quote
Old 04-26-2019, 07:53 PM   #3
Bronze Member
 
Join Date: Jun 2018
Location: California
Posts: 26
Default

The battery is under the chassis at the original location. Thanks for the quick replay.
Whynot is offline   Reply With Quote
Old 04-27-2019, 12:26 AM   #4
Platinum Member
 
Join Date: Dec 2015
Location: Arizona, Tempe
Posts: 567
Default

Those that were going to do that quit posting. If you are going to travel in freezing weather you shouldn't do it without battery heaters. I think we have all decided that lithium batteries need to be inside for climate control.
hbn7hj is offline   Reply With Quote
Old 04-27-2019, 01:17 AM   #5
Platinum Member
 
Join Date: Jul 2012
Posts: 2,240
Default

Quote:
Originally Posted by hbn7hj View Post
Those that were going to do that quit posting. If you are going to travel in freezing weather you shouldn't do it without battery heaters. I think we have all decided that lithium batteries need to be inside for climate control.
Option 1 - Lithium batteries within the heated space of the van. In the case of Winnebago they are heating the batteries that are mounted below the floor using ducted air so I guess you can consider that within the heated space of the van.

Option 2 - Lithium batteries mounted outside the heated space of the van with battery heating pads to keep the cells above the minimum temperature for operation (charging and discharging). Inactive cells below operating temperate but above minimum storage temperature would be warmed before operation.

In both cases when in storage the cells must be kept above the minimum storage temperature limit.
gregmchugh is offline   Reply With Quote
Old 04-27-2019, 12:59 PM   #6
Bronze Member
 
Join Date: Jun 2018
Location: California
Posts: 26
Default

Thank you all. Probably will stay with the AGM and increase the size as well as adding a second battery. So far for overnight camping and using the 120W suitcase solar I was good. I am thinking of a 2-3 day dry camp may need a bigger capacity to start wilth as solar will maintain it but probably not fully charge it w/ fridge running.
Whynot is offline   Reply With Quote
Old 05-03-2019, 01:53 AM   #7
JML
New Member
 
Join Date: Apr 2017
Location: NM
Posts: 2
Default LiPo

I put a LiPo in the outside battery compartment of my 2013 Pleasure Way Excel. (The back of the tray had to be cut to accommodate the battery.) I keep the RV outside in a covered port - lowest temp in the coach recorded this winter was 11 degrees. I charged it up prior to winterizing and turned the battery off. It stored fine and was in perfect health when the temps warmed up and we took her out. We didn't charge it when it dropped below freezing so we had no problem. I highly recommend the LiPo - it is a 100Ah and I use a 100 watt solar suitcase to top it off camping.
JML is offline   Reply With Quote
Old 05-03-2019, 02:15 AM   #8
Platinum Member
 
eric1514's Avatar
 
Join Date: Mar 2014
Location: ID AZ
Posts: 617
Default

Quote:
Originally Posted by JML View Post
I put a LiPo in the outside battery compartment of my 2013 Pleasure Way Excel. (The back of the tray had to be cut to accommodate the battery.) I keep the RV outside in a covered port - lowest temp in the coach recorded this winter was 11 degrees. I charged it up prior to winterizing and turned the battery off. It stored fine and was in perfect health when the temps warmed up and we took her out. We didn't charge it when it dropped below freezing so we had no problem. I highly recommend the LiPo - it is a 100Ah and I use a 100 watt solar suitcase to top it off camping.
Exactly. I don't understand the admonition that says Lithium batteries need to be mounted inside the coach. Other than storing them charged, a well designed BMS should prevent them from charging when it's too cold.
__________________
"Il Travato Rosso"
2015 Travato 59g
eric1514 is offline   Reply With Quote
Old 05-03-2019, 02:25 AM   #9
Platinum Member
 
Join Date: Aug 2010
Location: Minnesota
Posts: 7,572
Default

Quote:
Originally Posted by eric1514 View Post
Exactly. I don't understand the admonition that says Lithium batteries need to be mounted inside the coach. Other than storing them charged, a well designed BMS should prevent them from charging when it's too cold.

Many of the lithium batteries also have a cold storage limit of -4*F, so that can knock out a lot of the country. Of course having them inside the van only works for a while until it gets too cold inside, but if you were to go on a cold winter ski trip, outside ones could also get too cold.



If you have a a BMS that shuts down charging below freezing, and it appears some of the drop ins don't do that, you also need to have a method of heating the batteries up to charge temp. If they are outside that means heaters and way to power them. Lots of us have seen under freezing in our travels, and would need to be able to charge the batteries.
booster is offline   Reply With Quote
Old 05-03-2019, 04:41 AM   #10
New Member
 
Join Date: Feb 2018
Location: minnesota
Posts: 1
Default

On the Simplicity with the Under hood generator I think the built in regulator is not set up for LiFePo. Also if you remove the AGM load and your BMS disconnects the LiFePo for some reason you will damage the alternator I thought. So a few issues to address.
__________________

markoch is offline   Reply With Quote
Reply

Thread Tools
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


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 11:03 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.