Hello, Everyone
A while back I found a post on this website about using a Sunsaver-10 to protect your battery from overheating while towing. Now I can’t find that post and I want get your thoughts on something.
I bought a 125ah AMG battery for my tear. I plan to charge it most of the time with shore power through a PD4045. I also plan an added a “charge-while-towing” setup. This will be a 10ga wire that connects from my car battery to the tear battery to trickle power to it while I drive.
Now, people say that you shouldn’t charge a AGM battery when the ambient temperature is above 120 degrees fahrenheit, as this can damage the battery. To solve this, someone on this site suggested routing the “charge-while-towing” line through a Sunsaver-10. Apparently this device has temperature sunsure that will protect the battery and stop charging if it gets too hot.
Has anyone done this? Is this a good idea?
Also, what should I do about the negative wire supplying power to the Sunsaver? I will have a positive wire coming in from the tow vehicle, but I am not sure where I should connect the negative. Should it be a grounding wire to the trailer frame? Should I connect it to the negative buss terminal? I have tried to add a picture to clarify my question.
Thanks for you help with this.