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Discussion Starter #1
Disclaimer, I'm not a pro, but did some internet research on how to throw this setup together. Use info at your own risk ;)

Charging lithium batteries below freezing temps can cause irreversible damage. With my installation of 400ah of lifepo4 batteries inside the van I bought from Steve, I've been looking for an automated way of disconnecting charging when approaching freezing temps. I ended up using an ITC-1000F 12V model that Steve had actually purchased to wire up a fan to vent the battery compartment, but I ended up using it for another purpose. I had been thinking about doing this for a while (even before I picked up the van) and had actually looked at this thermostat on ebay, and I was lucky to find that Steve had already bought one and left it in the van. Since I couldn't run my solar through the internal relays of the thermostat (didn't want to risk burning them out as they only support up to 10 amps), I'm using it to trigger an external relay. I went with an EV200 for a few reasons. One it's rated for high amps so I don't think I'll risk burning it out or having it stick, and two I got a REALLY good deal on it. I put together a little video showing how I wired it up as when I was starting out as a newbie, I was looking for help on this topic and couldn't find much.

 

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Premium Member
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640 Posts
Discussion Starter #2
I can't seem to edit my first post so I'll just post a follow up. I finally got everything mounted. I had to extend the wiring coming from the solar panels and needed to make a custom cable with a terminal lug on one end for the relay and a spade/fork connector on the other end for the charge controller:



I used heat shrink to cover the end of the new cables. Final install mounted the thermostat to the underside of the bed frame and mounted the relay to the right next to my other relay and shutoff switches.

 
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