Battery Registration Too Much Info
#81
New Members
I just bought one of the cigarette lighter voltage meters and used it today for the first time.
I plugged it into the cigarette lighter and here's what I learned.
I pressed the start button
Within 1 second the voltage reading was down to 10.7 volts (this must have been battery voltage?)
Within 2 seconds the reading was 12.1 volts
Within 4 seconds the reading was at 14.4 volts (this must have been alternator voltage)
For the next 15 minutes of regular driving the reading fluctuated up and down between 14.1 volts and 14.3 volts
When the car is idling the reading was steady at 14.2 volts
It was apparent the DME was intelligently trying to monitor and manage the voltage.
I plugged it into the cigarette lighter and here's what I learned.
I pressed the start button
Within 1 second the voltage reading was down to 10.7 volts (this must have been battery voltage?)
Within 2 seconds the reading was 12.1 volts
Within 4 seconds the reading was at 14.4 volts (this must have been alternator voltage)
For the next 15 minutes of regular driving the reading fluctuated up and down between 14.1 volts and 14.3 volts
When the car is idling the reading was steady at 14.2 volts
It was apparent the DME was intelligently trying to monitor and manage the voltage.
#82
Super Moderator
Thread Starter
Everyone's readings will not be the same. It depends on the age and slope characteristics of the battery.
DME constantly analyzes the battery and adjusts the alternator output as needed. And if you've never registered your battery, the DME will push the output harder thinking its a really old battery (only because you've never reset the age).
DME constantly analyzes the battery and adjusts the alternator output as needed. And if you've never registered your battery, the DME will push the output harder thinking its a really old battery (only because you've never reset the age).
Last edited by donpb; 10-07-2020 at 09:57 PM.
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