Quote:
Originally Posted by bagofpucks
I’ve got the Noco trickle charger ironhorse posted. I use it on my snow plow truck that sits outside and has a weird electrical gremlin that drains the battery for some unknown reason. It works fantastic and I’ve had no issues in two winters of use. The only thing worth mentioning is I’m not sure if they are rated for lower than -20 or -25, so you’ll want to confirm that before purchase.
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Nominally they're rated down to -20 °C (-4 °F), but I've used mine in much colder weather with no ill effects. I think the temperature rating is more to do with the impact and weather resistance of the casing than the functioning of the electronics.
That said, I make a point of keeping the charger and connection to the extension cord I use under a closed hood, precisely so that the charger and the electrical connection are protected from the weather.