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What regulator to use?

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Posted by Roach on July 9, 2005, 6:31 am
 
I'm new to solar, and do extended camping trips. I have  a Unisolar FLX-32
( http://www.affordable-solar.com/1125.html  ) solar panel and a Xantrex
xPower 1500
battery/generator(http://www.xantrex.com/web/id/63/p/1/pt/24/product.asp ).
The problem is, I want to connect the two without damaging the xPower unit
while I'm away from camp for the day.What regulator (encased?) is
appropriate for this configuration? Both use standard cigarette adapters for
power out/in. Thanks for any tips.



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Posted by Landline on July 10, 2005, 10:35 am
 
One of the Morningstar range will suit you.
http://www.morningstarcorp.com/products/SunSaver/
What are you hoping to power from the setup?
A larger crystalline solar panel would have been substantially better.
You will only get 1.8 amps peak per hour from that 32watt solar panel
You are not going to power to many toys from that, let alone using the
inverter in the Xantrex power box.




Posted by Roach on July 11, 2005, 1:48 am
 

Thanks for the reply, Landline. I probably didn't provide enough info in my
first post. I camp for work on rivers, thus the flx-32. On a small raft with
low water, space is tight and the flx-32 can be walked on, rained on,
slashed on, etc., and no sharp edges to pop a tube or scrape my shin. I'm
using the xPower to power a CPAP for my newly diagnosed sleep apnea, using
this unit:
http://www.respironics.com/product_library/invoke.cfm?objectid 233282-4671-48A9-8EB86B90953BCA78&method=display
.
I find that the xpower kept in a dry box, provides 2 nights of DC use before
needing a re-charge, but I can camp 5-10 nights on a given river trip.
Apparently, the draw is quite variable depending on a given patient's
respirations. I realize the inefficiencies of this setup, but for practical
purposes, that's what I have. I'm pretty green to the solar thing, so can
you advise which of the Morningstar line is appropriate for this setup?
Thanks in advance.



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Posted by Landline on July 11, 2005, 2:33 am
 You would need to use the SS6 as the little Sunguard 4
http://www.morningstarcorp.com/products/SunGuard/  is not technically
suitable for sealed batteries. However in saying that, in the application
you are going to use it, and with the low wattage of your panel,
overcharging will not be an issue with that size battery on short trips.  If
space and weight is no limitation then go for the SS6.
You can buy 12v CPAP machines



http://www.respironics.com/product_library/invoke.cfm?objectid 233282-4671-48A9-8EB86B90953BCA78&method=display
.



Posted by Roach on July 11, 2005, 1:48 pm
 

http://www.respironics.com/product_library/invoke.cfm?objectid 233282-4671-48A9-8EB86B90953BCA78&method=display
.


Thanks again. I'll check out the SS6. This CPAP has a 12 volt adapter which
is what I'm using, but I bring along a laptop on occasion as well, thus the
120 volt need of the xPower.



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