Battery Day in the Early Family...

Not trying to tell you what to do but just stating that a $30 load tester comes in handy in this situation.
Maybe, but the Continental sits alot. ( 2017- like 15k mi)
He's self employed ( sales rep for various plumbing/ hardware companies) , and has another car for his work miles (2020 Lincoln Nautilus)
He normally takes it to church and lunch/dinner on Sundays, but b/c of the weather this year, he hasn't taken the continental out of the garage.
So it's not been started since
So what are the lessons learned? Don't wait so long to replace the battery? I'll bet your uncle go some (battery dying) signs before he showed up at your place looking for a battery charger.

I suggested a battery tender....