I'm looking at putting a small solar system in an unheated/uninsulated storage shed. I expect temperatures in the shed to drop to -40C (-40F) once every 5 years and below -30C (-22F) pretty much every year for a day or two. I need charge controller/inverter that can survive these temperatures. I haven't found anything rated to these temperatures. I'm aware of battery concerns, but I don't want to touch that in this thread.
I'm intrigued by the Victron 100/20 MPPT. It is rated to -30C. No LCD. No fan. I suspect it could likely operate at -40C, but I don't know. I have seen MPPT's that are rated for -35C, but I haven't seen any for -40C.
I'm also intrigued by the Samlex PST-300-12 inverter. It is rated to only -20C. No LCD. It has temperature controlled fan. I don't expect the fan will have any need to run on cold days as there will be next to nothing for a load.
I'm new to solar, but in my experience brutal cold doesn't seem to wreck any other electronics I own. Should I expect problems with the above solar equipment?
I'm intrigued by the Victron 100/20 MPPT. It is rated to -30C. No LCD. No fan. I suspect it could likely operate at -40C, but I don't know. I have seen MPPT's that are rated for -35C, but I haven't seen any for -40C.
I'm also intrigued by the Samlex PST-300-12 inverter. It is rated to only -20C. No LCD. It has temperature controlled fan. I don't expect the fan will have any need to run on cold days as there will be next to nothing for a load.
I'm new to solar, but in my experience brutal cold doesn't seem to wreck any other electronics I own. Should I expect problems with the above solar equipment?