SawMaster
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That's a fairly large lead-acid battery, not AGM, so what I'd suggest is making sure your HKW controller is installed in an accessible place, then trying 12.2V cut-off and seeing what recording times you get. If you need more time go lower but 12.0 is as far as you should probably go. If not enough then your into powerbank territory anyway.
Also Houston gets hot so at 2 years age your battery is certain to be low on water. They call it 'sealed' but those cell caps are removable, lifting straight up with a little prying and wiggling. Top off with distilled water or a bottle of filtered drinking water same as with old batteries- to the bottom of the filler neck. When time to replace your battery it get a good AGM, your owners forum friends should be able to point you to a good one.
Phil
Also Houston gets hot so at 2 years age your battery is certain to be low on water. They call it 'sealed' but those cell caps are removable, lifting straight up with a little prying and wiggling. Top off with distilled water or a bottle of filtered drinking water same as with old batteries- to the bottom of the filler neck. When time to replace your battery it get a good AGM, your owners forum friends should be able to point you to a good one.
Phil