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Current draw on a W210 1997?

AANDYY

Active Member
Joined
Sep 2, 2008
Messages
958
Location
Blackpool
Car
E300DT-W210-1997-Elegance-Azurite Metalic Blue. (Don't mention the rust, LOL) Running on WVO. 65k m
May be a difficult question this one, what should be the 'locked car' current draw on my car, I,E over night.

I thought my battery had gone or going, Bosch silver top, indicator on the top had changed to 'check' a few months ago, I don't now how old the battery was.
One cold morning, xmas time, it turned over slowly and later after a short drive, it didn't start it did after a jump start. :rolleyes:
Checked running voltage, 13.8v idle to fast rev. I bought a new Bosch Silver with a blue top, 95 amp/hour 830 CCA.
I've checked the voltage the morning after driving the night before and 48hrs with no car use and the voltage was 12.4v, I've been on a few long runs so it should be fully charged now?
I thought the voltage should be little higher with a new battery, even though it's winter and an average of 0C, am I wrong? :o
 
Check to see what your alternator is charging at. Place the leads from the multimeter on the battery terminals with the engine running and a electrical load on the alternator (lights on, heated rear window on, heater motor on etc).

At idle, you should be seeing at least 13v, more like 13.5v and with no load on it, around 13.8v to 14v.
 
Check to see what your alternator is charging at. Place the leads from the multimeter on the battery terminals with the engine running and a electrical load on the alternator (lights on, heated rear window on, heater motor on etc).

At idle, you should be seeing at least 13v, more like 13.5v and with no load on it, around 13.8v to 14v.


Yup did all that, ta. It's about 13.8v with load, no load (lights and rear screen heater), idle and fast revs.

I did though however put the multimeter at the jump start position, engine bay.
 

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