I've been using jerboa, it's the only one I've heard of, it's not great but under active development, and better than the web interface for Lemmy instances

I just started using Connect for Lemmy since it's the only other Lemmy client that came up when I searched the play store. it's not great, but I think functionaly a bit better than jerboa? but really rough overall.

Keep in mind LED lighting is probably the single biggest drain on wireless keyboard battery life, not like it doesn't exist or you shouldn't use it, but it will eat your battery life