Good points Dennis. Right now, I'm only doing short trips, but that being said I will re-adjust my voltage reg down to 14.2.

thanks

alistair

On 2013-01-06, at 9:00 PM, Dennis Haynes wrote:

> Voltage regulators can change slightly due to temperature. As it gets colder
> voltage tends to go up. Orin reality voltage goes down as temperature
> increases. If using the van for long trips it would be better for the
> batteries to set voltage between 13.8 to14.2. 14.5 is an upper limit for
> most flooded batteries. At 14.5 volts you are above the gassing stage and
> promoting corrosion of the positive plates. 
> 
> Dennis
> 
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Alistair Bell
> Sent: Sunday, January 6, 2013 1:14 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: aux. battery wiring and ACR issues
> 
> I have been experiencing some undercharging of my aux battery recently and I
> think I figured it out. I've posted my findings and sketched up my aux.
> battery wiring in this post on my blog:
> 
> http://shufti.wordpress.com/2013/01/06/vanagon-my-auxiliary-battery-wiring/
> 
> alistair
>