I bought a ibasso dx120 years ago. Lasts about... 13 hours? 16? It lasts a super long time but is super laggy for most users today.

Honestly when it comes to daps I would stick with used or older models for the most part.

Hiby r2 touts a crazy long battery and most reviewers have confirmed this bit you're looking at 430 usd to get it so a bit pricey for me personally.