GP said rated, not necessarily for operation. It could just mean that the battery will survive such low temperatures unharmed. I have a summer cabin with a sol

GP said rated, not necessarily for operation. It could just mean that the battery will survive such low temperatures unharmed. I have a summer cabin with a solar panel and a couple 12 V lead acid batteries. It would be great to be able to install some lithium type batteries instead, so long as I know they will survive winter.