Dead battery with no warning - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Cunningr · 07-24-2018, 10:16 PM

My car did same hing last year, pushed started it and was able to drive it home.

Modern day batteries will do that, as it happened on my other car as well. Depending on battery brand installed 2 to 4 years is fairly normal life of a car battery.

kk2002s · 07-25-2018, 03:50 AM

Same thing driving around, stop at store and the Clicks. They just work and then they just don't.
Check voltage, non-running 12.5 ish, running 15 +/-.

BirdDog · 07-25-2018, 06:22 AM

Had same thing happen to me (not with my Boxster, another car) a few years ago... ran to bank and when I came out, Click, Click, Click. Luckily, the bank manager came out as this was happening and ran me over to Walmart to get a battery. (Shout-out to Suntrust Bank! That's what I call customer service!) It was a hot day too. I was concerned that it might be the alternator, but when checked, everything was fine.

As someone said, batteries can die suddenly on hot days as well...

My Boxster is probably due for a new battery - current one is coming up on 5 years old (in October).