Reply
 
Thread Tools Display Modes
 
Old 08-03-2020, 11:41 AM   #1
New Member
 
Join Date: Aug 2020
Location: Canada
Posts: 2
Default Winter lithium storage

Im confused on correct extreme cold winter storage of my 2017 Zion srt. 2 eco trek lithium batteries , one agm , and agm starting battery. It will be stored in unheated garage with -30 temps . I understand the winterization of van but not the electrical.
Thank you
__________________

Paulz is offline   Reply With Quote
Old 08-03-2020, 12:29 PM   #2
Platinum Member
 
Davydd's Avatar
 
Join Date: Aug 2007
Location: Minnesota
Posts: 5,005
Default

Quote:
Originally Posted by Paulz View Post
I’m confused on correct extreme cold winter storage of my 2017 Zion srt. 2 eco trek lithium batteries , one agm , and agm starting battery. It will be stored in unheated garage with -30 temps . I understand the winterization of van but not the electrical.
Thank you
Are you quoting Celsius or Fahrenheit at -30? Regardless -30C is -22F. Lithium Ion Phosphate batteries if their internal core temperature goes below -4F (-20C) the batteries will be permanently damaged. I'm not clear if incremental or absolute. This is what I got from the company that distributes my batteries, Elite Power Solutions.

"Temperatures below -4F (-20C) will cause the electrolyte to freeze which will cause permanent damage to the batteries if it does not kill them entirely. If storage temperatures will go below -4F then you will need to heat the batteries to above -4F to prevent damage to the battery. There is no exception to this."

As I mentioned batteries in use or being charged I have observed to be 10-15 degrees F. or so above the ambient air temperature. Also my unheated former garage that I could not store my van in always was almost 20F above ambient temperature. So you may have dodged a bullet if your core cells of your batteries have not gone below -4F or maybe your batteries have been incrementally damaged as in life of the battery or maybe your storage space has not gone down below -4F long enough to lower the battery temperature by the factors mentioned.

Electrical is a method of applying heat to keep the batteries above -4F (-20C) either directly with heating pads or indirectly by heated space. The latter can be by any fuel source. Directly by heating pads can be from the batteries themselves as long as you have a shore power connection of 15a.

Early on the Class B manufacturers and battery companies were ignorantly marketing to Americans with the -20 temperature confusing Celsius with Fahrenheit saying or implying it was -20F. ARV was the first to correct that and I confirmed that directly as I mentioned above. I don't know if Roadtrek ever did.
__________________

__________________
Davydd
2015 Advanced RV Ocean One Mercedes Benz Sprinter
Previous Class Bs:
2011 Great West Van Legend Sprinter
2005 Pleasure-way Plateau TS Sprinter
Davydd is offline   Reply With Quote
Old 08-03-2020, 12:45 PM   #3
New Member
 
Join Date: Aug 2020
Location: Canada
Posts: 2
Default

Hi davydd. Up here near Ottawa Canada -30 to -40 Celsius
Paulz is offline   Reply With Quote
Old 08-03-2020, 10:47 PM   #4
Platinum Member
 
@Michael's Avatar
 
Join Date: Oct 2018
Location: MN
Posts: 209
Default

Quote:
Originally Posted by Paulz View Post
Hi davydd. Up here near Ottawa Canada -30 to -40 Celsius
Does your campervan have built-in battery warmers? They will help.

I would certainly figure out how to put some heat into the van whenever it's below 0F/-20F in your garage. In my experience, one 1500 watt electric heater running continuously will warm my campvervan about 30F above outside temp, two heaters about 60F above outside temp.
@Michael is offline   Reply With Quote
Old 08-03-2020, 11:00 PM   #5
Platinum Member
 
Join Date: Nov 2017
Location: Michigan
Posts: 176
Default

Quote:
Originally Posted by @Michael View Post
In my experience, one 1500 watt electric heater running continuously will warm my campvervan about 30F above outside temp, two heaters about 60F above outside temp.
Wow, hate to see your utility bill!

We park 'inside', but our 'economical' fall-back plan is to heat the battery compartment only.
__________________
2016 159" High Top DIY ProMaster with 500ah Starlight Solar/Elite LiFePo4, 810watt Kyocera Solar w/MidNite Solar Classic MPPT, Magnum 2812/MMP250-60S Charger/PSW w/remote, Nations 280amp 2nd Alternator with DIY [formerly, Balmar] regulator, NovaCool R4500 12/120v frig, 2 burner TruInduction cookstop, SMEV 8005 sink, FloJet R4426143 pump. No A/C or indoor washroom.
Winston is offline   Reply With Quote
Old 08-04-2020, 02:32 PM   #6
Platinum Member
 
Davydd's Avatar
 
Join Date: Aug 2007
Location: Minnesota
Posts: 5,005
Default

Quote:
Originally Posted by @Michael View Post
Does your campervan have built-in battery warmers? They will help.

I would certainly figure out how to put some heat into the van whenever it's below 0F/-20F in your garage. In my experience, one 1500 watt electric heater running continuously will warm my campvervan about 30F above outside temp, two heaters about 60F above outside temp.
We have 16 3.4v 200ah cells assembled 4 in series for a nom. 12v 200ah battery as you see in the photo. Then we have 2 5amp electric resistant heating pads shown placed between two batteries (total of 4 for 800ah) and then encased in a fiber glass below the floor. So, 10 amps total that are on intermittently thermostatically controlled. They are powered off the batteries themselves. They will keep the batteries above 41F when it is -20F outside. If they ran continuously, which the don't, they would consume 240a in a 24 hour day. On the road with an 800ah battery bank that is no problem as we would certainly be driving every day to get to warm weather. In storage outside as we did the first two winters, it was no problem as the shore power kept the batteries charged.

__________________
Davydd
2015 Advanced RV Ocean One Mercedes Benz Sprinter
Previous Class Bs:
2011 Great West Van Legend Sprinter
2005 Pleasure-way Plateau TS Sprinter
Davydd is offline   Reply With Quote
Old 08-05-2020, 04:03 AM   #7
Platinum Member
 
@Michael's Avatar
 
Join Date: Oct 2018
Location: MN
Posts: 209
Default

Quote:
Originally Posted by Winston View Post
Wow, hate to see your utility bill!


Electricity is a flat 9 cents/kwh in winter here, and I only run electric heat the few nights when it's below 0f.
__________________

@Michael 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 11:39 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
×