On Mon, Mar 14, 2011 at 7:04 PM, Daryl Christensen <daryl@aatransaxle.com>wrote:

> OK…My van charges at about 13.6 to 13.8 or9 max. All the spiffy
> temp/voltage
> AGM battery chargers I see are 120V AC input..
>
> Is there an onboard “charger widget” for upping the charge voltage to the
> 14.4 the AGB batts need?
>

Yeah, look for 12v to 12v converters.  That's what 'Mr.  Squirrel' did in
his rig, put it between the 1315 and the aux battery.

>
> I wasn’t aware that a modern alternator could be tweaked for higher output
> voltages. Mine is a 130 amp Ferd alternator and I have an AGM batt for my
> refer only. Used to do it on the old mechanical Bug regulators all the
> time.
>

Yeah again.  I know of one '87 Westy running an adjustable regulator tweaked
to 14.2/4 at the starting battery and it also seems to keep the AGM aux
batteries happy.

>
>
>