Digital Voltmeters...

[94CamryBumpin 10+ year member]

how accurate are the digital voltmeters that connect through your cigarette lighter? it obviously says accurate within .1V but just curious as to what u guys think about their accuracy?

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[94CamryBumpin 10+ year member]

anyone?

 

[stones 10+ year member]

Voltage meters are pretty simple tech, it is most likely accurate.

 

[tommyk90 5,000+ posts]

They can be on and off sometimes. I have one plugged into my cigarette lighter, and i'll have my DMM on my amp. The DMM responds MUCH quicker to voltage drops when i play music/do burps. The plug in gauge is usually off from the DMM all around too. Most of the time my DMM reads higher.

One thing it does come in handy for is letting me know when my alternator shuts off because it drops to 12.8-13.0 volts pretty quickly. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[stones 10+ year member]

I had one that was way off ... My battery was reading 14.5 volts and my alternator was reading 17.8 volts ...
One could only have wished that were true on a stock electrical system //content.invisioncic.com/y282845/emoticons/crying.gif.ec0ebefe590df0251476573bc49e46d8.gif

Yikes!, I've never seen a variation like that anywhere except factory gauges in a car.

 

[94CamryBumpin 10+ year member]

so i can most likely assume its accurate within a couple of tenths of a volt?

 

[94CamryBumpin 10+ year member]

yes?