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Old 12-30-2018, 11:50 AM
97 SL320 97 SL320 is offline
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Quote:
Originally Posted by dieseldiehard View Post
That said, I use something to monitor battery voltage that seems to be NLA, at least I couldn't find any after a thorough search.
It is a small device with a couple of cigarette lighter outlets that is hardwired to 12V (I connected in parallel with the tilt-out lighter socket in the W210 car.
MPJ has some volt meters that plug into the lighter socket, I didn't look for the type you describe.

Also, mid / late 90's MB have a function to look at HVAC data that includes battery voltage. With the HVAC blower running and key on, press and hold " REST " , the display will change to a " 01 " then flash a value. Use the fan " + " and " - " button to scroll through the data. I think battery voltage is 06 or at least in that area. Voltage will be a few tenths below actual battery due to voltage drop through the wiring but it is close enough.

Quote:
Originally Posted by dieseldiehard View Post
Of note is the feature it has where three small LED's indicate the state of charge: green, yellow and red.
These indicate analog values and are a quick indicator of whether your battery voltage is changing or low. A lot easier then reading a seven segment LED or LCD display.
The do sell an analog / digital meter. Yep,a light or analog display is better in getting your attention and digital for an actual reading.


Quote:
Originally Posted by dieseldiehard View Post
There is something about the European cig lighters in Mercedes that leaves me hating them because I have seen them not make good contact to available cigarette lighter plugs.
Anyone else had that problem?
DDH
The euro and some newer domestics use a shallow socket, use an older plug with the ground contact strap pretty high up and it will fall out. I remember seeing an adapter to cure this. Newer lighter plugs have a longer ground strap to fix the problem.
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