48 to 12 volt conversion [RE-wrenches]

[Christopher Freitas --- OutBack Power]

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I have used an MX60 in this configuration for several years now with 
success - the concern we had about the higher voltage battery being 
"stiff" is not an issue any more.  

The lower voltage battery (12 or 24vdc) needs to be separate from the 
other battery - although they should have a common negative/ground 
connection. This second MX60 can be connected to the same HUB & MATE as 
the other MX60s and inverter/chargers in the system with the higher 
voltage battery.  

The amount of power available to the lower voltage battery will be 60 
amps maximum - so about 800 watts for a 12vdc battery and 1600 watts at 
24vdc battery. Since the battery can provide power as well you can run 
very large loads for a while and then let the system 12v or 24v recover 
when the loads are low.   

So - yes, it works well for large load situations - but its more 
expensive than just using a DC to DC converter if the loads are smaller. 
   

Christopher

Darryl Thayer wrote:
> 
>  I used a MX60 supplied by the 48 volt system to
> charge and float the 24 volt battery system.  


Christopher Freitas
OutBack Power Systems, Inc.
cfreitas @ outbackpower.com  
www.outbackpower.com
Arlington WA USA
Tel 360 435 6030  

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