View Single Post
      08-03-2021, 01:40 PM   #124
Fungshui
Private
30
Rep
65
Posts

Drives: 07 Z4M Coupe
Join Date: Jan 2018
Location: San Jose

iTrader: (0)

Garage List
2007 BMW Z4M  [7.00]
Quote:
Originally Posted by WangTa View Post
Anyone else install an Odyssey battery? I ordered this one back in November of last year. This week, my engine barely turns over and struggles to start. I checked the battery voltage and the reading at rest was 7.5V-9.7V. With engine running it jumps up to 14.7V. I have been using a CTEK battery charger to keep the voltage up but if I don't plug it in every night, it'll get very low again and I'm afraid it will strand me. Even if I unplug the battery for a couple hours, the voltage will drop to 11V and the car is not even locked.

I brought the car to a BMW specialist to check for a parasitic draw and everything checked out fine. They did say however, that the Z4 requires a 90 amp hour battery and this one is only 80? I couldn't find the stat on that, is that true?

Working on an exchange/warranty return but I'm baffled. Odyssey are supposedly good batteries, and I ordered the H7 - the bigger battery.
Any updates? I'm in the market for a new battery.

My O'Reilly Super Start Platinum - AGM Battery (Part #48PLT) failed at 3 years and 1 month (3 year warranty).
Appreciate 0