The spec sheet for the SS-MPPT says 75 volts maximum open circuit.  Maximum PV power: 200 watts for 12-volt batteries and 400-watts for 24-volt batteries.  While it is supposed to be protected from PV overload and PV high voltage, it doesn't seem surprising that failures that have been observed are in systems that are pushing on these limits.  Fortunately, Morningstar stands behind their product.

Kent Osterberg
Blue Mountain Solar, Inc.
 

bob ellison wrote:

From memory it seems that the max voltage listed in the manual for the Sun Saver MPPT is 35 volts but I don’t have it handy.

 

Bob Ellison

 

From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Starlight Solar, Larry Crutcher
Sent: Friday, January 21, 2011 8:38 PM
To: RE-wrenches
Subject: Re: [RE-wrenches] 10A Charge / load controller

 

I have had failures with the Sunsaver MPPT. I have used them with a single Sanyo module in small battery systems. Perhaps they just can't handle the 50.9 Voc.

 

Larry

Starlight Solar Power Systems

----- Original Message -----

Sent: Thursday, January 20, 2011 5:38 PM

Subject: Re: [RE-wrenches] 10A Charge / load controller

 

Try SunSaver MPPT. 

15 amps, MPPT and load control (or light) control

 

Use the MSC to connect the controller to your PC and adjust many settings and get log data. 

 

We use a lot of them and have had very few issues. 


Thank you,

 

Maverick

 

 

Maverick Brown

BSEET, NABCEP Certified Solar PV Installer ®

President & CEO

Maverick Solar Enterprises, Inc.

Office:     512-919-4493

Cell:        512-460-9825

 

Sent from an iPhone. 


On Jan 20, 2011, at 5:37 PM, "Jason Szumlanski" <ja...@fafcosolar.com> wrote:

I’m looking for a ~10A charge controller for a 12V battery with adjustable LVD that goes up to at least 12V. Priorities in order are:

1.       Small in size

2.       Good

3.       Cheap

The best I can come up with now is the Xantrex C12. Looking for alternatives. Recommendations?

Jason Szumlanski

Fafco Solar

 
  



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