Thread: Battery dead?
View Single Post
Old 06-07-2020, 12:22 PM   #15
FC
Solving problems
 
FC's Avatar
 
Join Date: Oct 2003
Carmudgeonly Ride: M5 / 718 GTS / Cooper S / GTI / LR4
Location: Metro Boston
Posts: 25,215
Follow-up: Battery, all on its own, dropped to 11.6V again after 24 hours - the same value as when it was connected to the car. So I think I can rule out parasitic losses as the main culprit. A day later I reconnected it (did not measure voltage) and tried to start it and it felt just like at the Hospital (seemed just a little low). I jumped it with the LR4 without starting the LR4 (I know, not ideal) and it fired up perfectly and I drove it to run an errand.

Just now I took the battery to Autozone to have it tested and the guy came back with a new battery without checking anything. I guess that's that. We'll see if I have issues again. New battery measures 12.78V. Have not started or driven the Miata yet.

EDIT: Can I just say how nice and simple is dealing with the battery on the Miata? All the new fancy cars have all this crap and programming and other nonsense and they are difficult to get to. It took me literally 1 minute to drop in the new one.

Last edited by FC; 06-07-2020 at 12:34 PM.
FC is offline   Reply With Quote