Just hoping for some advice Got my f430 1 yr ago Sat in dealer for 6 months not on tender Battery was apparently replaced prior to receiving it I always put it on tender ctek mks5 In winter when it got colder i noticed sometimes id get the rough start Anyway car was at dealer for 2 months and apparently it wouldnt start a cell collapsed in battery Apparently changed under warranty It had been on for few months but now after f1 primes voltage is 11.9-12.1v, and often rough starts and if u shut off and start again often the error with 2 triangles comes up I checked and battery thats in it is a cheap supercrank $120usd battery I just replaced it with a yuasa agm was around $320usd Was my rough starts and above indicating lazy battery? Tender always showed charged When battery was new no rough idles
A general guide is the voltage the battery drops too when you push the start button, too low and it will only run on one bank and be lumpy
I suggest getting a Battery Load Tester. Amazon has them for $40-$50. You simply put the alligator clips on the battery terminals and push the button. It will tell you when your battery under load, is getting weak. They are nice to have in the garage for other cars, motorcycles, etc. It sounds like yours was getting weak. 11.9 - 12.1 is too low for a resting battery. The voltage probably dropped way more when you hit the start button. Sent from my iPad using FerrariChat.com mobile app
Apparently when turning over around 10v is ok Started car today with new agm and rough idle however restart no triangle suspension warning Ill try to let key initialize for 15 seconds prior to starting
