In article ,
John Davis wrote:
On 10/10/2011 4:14 PM, Bruce Gordon wrote:
I use a pair of L16HDs in series to power my shacks 12Vdc Buss. They
are feed by a Numar 35Amp Regulated Power Supply, that is set for
13.4Vdc. The Power Supply floats the batteries at 13.4 Vdc
If you are floating batteries you should consider a proper 3-stage
converter/charger.. http://www.bestconverters.com is a good source of
those.. he specializes in RV converters. (By the way I have no
connection with him)
My Motor home has a Progressive Dynamics 9180 with optional charge
wizard. This is on the large size for a pair of GC-2 Golf car type
batteries in series... but man does it do a good job. a 8260 would be a
better choice for these batteries (one pair)
It has 3 charge voltages depending on teh battery voltage it either
limits current, limits voltage, or limits both.
If you are just floating the Batteries across a Regulated Powers Supply,
there is NO Need to go to the expense of a Three State Charger. 99%
of the time you will not be using the Battery for anything but a buffer.
The 1% of the time, where you have actually USED some of the Battery
Capacity, and are in Recharge Mode, the amount of current supplied to
the Battery, as opposed to the attached Load, only depends on the
battery Voltage, to Regulated Voltage Ratio, and that will just slow
charge the battery back to 100% Charge, and the Set Float Voltage.
What does a Three State Charger, give you, that isn't inherent in the
Regulated Power Supply Setup? Just wondering?
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Bruce in Alaska add path before the @ for email