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Post Info TOPIC: About charging voltages from towing vehicle
Brodie Allen


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About charging voltages from towing vehicle
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What are the relevant voltages from the tug since alternators/generators

are likely all different, and where are they regulated before the van battery

(if they are/are not).

 

Brodie



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Gundog


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I just went out and put the multi meter on my ute.

After first starting the charge was 14.2v it quickly rose to 14.48v after a short a minute or so it had settled back to 14.44v, checking at the anderson plug and both sides of the VSR all voltages were identical.

I do recall that when we travel with the van connected the voltage read at the OBDII port with my torque app is 14.44v as we depart after 5 or 6 Kms it usually settles to 13.8v



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Whenarewethere


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About 14.40 to 14.42 volts pretty stable voltage more or less as soon as the engine is running.

 

I have a DC-DC charger for my auxiliary batteries, near the batteries.

 

180 amp alternator. After about 30 seconds with air conditioning & hi-fi etc all turned off. Charges at 80 amps. 238 amps for a second to start the engine, 2.0L petrol.



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Brodie Allen


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Thanks for your replies.

Seems to be about the correct voltage for charging.


Does that current go direct to your batteries?
If so, what regulates the charge?


Because the solar is also feeding in all the time via the controller.

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