12V lithium batteries upgrade?

So I decided to replace my lead acid 12v batteries with lithium a few weeks ago and besides a bunch of error codes that had to be cleared I've had no problems so far. I've decided to keep the old batteries in the frunk just in case scenario....If anyone has how to questions only im glad to try to help. I'll try to update my experience after a few more months including cold weather experience after the winter season.