Natey2

Would a normal car battery die with 7 days of non-use of the car?
Battery is 6 months old, size 24F, 700 CCA, installed by AAA (I think it's an Interstate battery re-branded AAA), in a 2005 Lexus LS430.
The previous AAA installed battery lasted almost 6 years, but I've never left the car unused for a week.

ESully

A good battery should start easily after a week, but make sure the alternator is putting out about 14V to keep it fully charged.
If the alternator is good you can have the battery load tested, and if it fails get a warranty replacement.

Natey2

Auto Club jump-started my car, and things worked for the day. I ran/drove it for over 45 mins, as they suggested. Even started fine later that day.
Battery died the next day and car wouldn't start again: Battery measured 90 CCA, 9.8V at 52F.
AAA tech came out again and replaced the battery, under warranty.

(OE is 585 CCA. New battery is also 700 CCA. Charging System outputs 14.1V)

I searched the ClubLexus forum, and found a discussion where someone said a dashboard cam with backup battery (if someone bumps your car while parked) can drain the car battery under similar circumstances.
I'm disconnecting my dashcam (has internal battery) until the pandemic is over.

RSFSPORT

With the shelter in place and only essential driving, I've been rotating a battery tender on 3 of our vehicles. Our IS battery is fairly new and did have a dead battery after a week of sitting without a tender.