Detailingdoc

Let me start off by saying that daily I take short trips to and from work, which I think may be the main culprit, about 2 miles each way and takes between 10-20 mins each way depending on traffic.

There have been a couple times in the past where my car would not start. All electronics come on but engine doesnt turn over. A jump will get the car going. I had the battery replaced by MB roadside about a year ago.

My battery measures about 12.4 V with the engine off and reads 13.6 V with the engine running and stays at 13.6 with accessories on ie lights, radio, ac. Are these appropriate numbers? I was thinking the number should be closer to 14V with the engine running.

Also how do you convert the battery rating from EN to SAE. MY battery has a rating of 700 EN but my CTEK analyzer wants to measure in SAE

I bought a CTEK 7002 charger to try and charge my battery every couple days I hope that works really dont want to take it to the dealership.

Curious to see if you guys have any other thoughts

Moto_Guzzi

C350 2008 99 000km:


Before start(Cold)- 1x Week=12.15V


Took a trip 10km.
Idle(Warm)-Fan running=13.87.....13.95V(Varies between)


Idle all lights on, fan running=13.87.......13.96V(Varies between)


Switch off engine, wait parklights off=12.45V(18:00).....Going down......Slowly
10 min=12.47V.........(18:10)
50 min=12.45V.........(18:50)....Looks ok 1st part
60 min=12.30V.........(19:00)
90 min=12.34V.........(19:30)
120 min=12.37V.........(20:00)
I know from experience how fast it goes down could mean something.
If it goes down too fast battery may fail current test.
If nothing is switched on, key out, if it goes down fast, get battery tested.

Big Daddy

dodgy eis module sounds like the culprit battery voltage appears ok. It is expensive. I am in the process of changing mine out and I do not have much change from 2000 dollars