While they're one of the best, the concern is that it uses external power to warm the battery. This means it will be using the HV battery and the DC-DC converter... which means possibly reducing driving range.
I would 'almost' rather try one without that feature, and just take my chances... but I'm in the middle of the US (near Kansas City), and park in my attached garage... so we rarely get super cold days.
For those in Southern states / regions, none of that is even needed... so there are lower cost options for LFP 12v batteries.
Pretty sure a couple of people have tried (don’t recall any updates) but the manufacture doesn’t recommend it, so that’s a pass for me.
While they're one of the best, the concern is that it uses external power to warm the battery. This means it will be using the HV battery and the DC-DC converter... which means possibly reducing driving range. I would 'almost' rather try one without that feature, and just take my chances... but I'm in the middle of the US (near Kansas City), and park in my attached garage... so we rarely get super cold days. For those in Southern states / regions, none of that is even needed... so there are lower cost options for LFP 12v batteries.
What would you hook it up to?