Low battery shut-off (or at least a warning)

[dbahn]

Is there a way to install a shut-off mechanism when the house battery reaches a predetermined low voltage? In most situations I'd rather lose the battery functions (including the refrigerator) than I would the battery itself. It's mostly due to accidental failure to turn off the master but could apply to over-discharge during normal operations, particularly if there was a intermediate warning sound.

I recently accidentally left the master switch on for a prolonged period and fear I may have damaged the AGM battery. (I'm having it tested. The load test was fine, but it wasn't at full charge when I dropped it off.)

 

[Vicr]

https://www.bluesea.com/

If any company can supply a device like that it would them.

 

[ARoamer]

Auto Off

Look for a adjustable DC voltage sensitive relay with the amp rating you need.
Example-

https://www.intervolt.com/product/voltage-sensing-relays/