Am planning the same upgrade when the factory jars finally fail, or maybe a little sooner.
I'm looking at a pair of these now, after doing a lot of research with Battle Born BB10012 batteries.
https://relionbattery.com/products/lithium/rb100-ltRelion has solved (to some extent) the cold charging issue, but using some of the charging amperage controlled by the BMS to warm them up before allowing charging to happen. I had a look at their charts and graphs and the specs are as good or better than the industry standards. Pricey, but for cold weather camping, probably worth it.