There's an interesting trade-off for people who go the DIY route: LFP batteries are pretty ideal for power storage, for a lot of reasons (safety, durability), but they don't deal well with cold and can't generally be charged if the temperature is below freezing. So, you can have them in the house (in the garage, perhaps) where they'll stay warm enough, or you can have them away from the house where they'll do less damage if something goes horribly wrong, but then you have to figure out how to keep them warm in the winter if freezing temperatures are a thing in your climate.