Dennis,

I like , well it seems likeable, the modern cars volt reg system via computer. Don’t know much about it but seems more capable of delivering the right voltage to battery.

We have to add dc-dc controller to do same.

Alistair

> On Apr 9, 2020, at 12:58 PM, Dennis Haynes <d23haynes57@hotmail.com> wrote:
> 
> It is somewhat normal for alternator voltage to drop a bit under load. Often the regulator also includes a bit of temperature compensation to reduce voltage based on temperature. Complex systems will even monitor battery temperature monitoring and add some compensation there. 
> 
> Dennis
> 
> 
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of David Beierl
> Sent: Thursday, April 9, 2020 1:57 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Re: Alternators
> 
>> 
>> - the voltage drops as electrical loads applied. in winter, headlights 
>> on, heater fan on, re fogger on, wipers on, the voltage can drop ( as 
>> measured on fuse panel) to the high 13s.
>> 
> 
> The whole point of the regulator is to *not* drop under load.  YOu're seeing the voltage drop in the panel feed.
> 
> Yrs,
> d