Forum Discussion
Almot
Dec 01, 2015Explorer III
Do you math, try to estimate how much charge it will lose over winter. It will not be -40C all the winter. From top of my head, with temps consistently below 25C you will lose less then 30% of charge in 3 months. How bad is 30% discharge dragging for several weeks (i.e. slowly dropping from 0 to 30% over 3 months)? Don't know. Let chemistry gurus here chime in.
Leaving it on either solar or 110V maintainer is what I would normally prefer, but electronics might fail at -40C. Losing a cheap maintainer is one thing, losing more expensive MPPT controller is another. But, at least, you'll have batteries fully charged until (whatever is charging them) will have failed. Heck, your MPPT might even survive -40.
Leaving it on either solar or 110V maintainer is what I would normally prefer, but electronics might fail at -40C. Losing a cheap maintainer is one thing, losing more expensive MPPT controller is another. But, at least, you'll have batteries fully charged until (whatever is charging them) will have failed. Heck, your MPPT might even survive -40.
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