alternator to charge house battery

[John61CT]

https://www.google.com/search?q=samlex+acr-160

Use eBay's saved search notification feature for the occasional bargain.

This one has adjustable setpoints

https://www.amazon.com/gp/aw/d/B071WNSCX5

 

[Charly]

looks you found links. The price on amazon fluctuates (like most things on amazon)