After playing youth system basketball with the junior teams of the Greek club Faros Keratsiniou, Batis began his pro club career in the 1999–00 season, with Panionios Athens, where he competed in Greece's top-tier level Greek Basket League.
With Panionios, he also competed in the now defunct European-wide secondary level competition, the FIBA Saporta Cup, in the 2001–02 season; and in the now defunct European-wide third level competition, the FIBA EuroCup Challenge, in the 2002–03 season.
Batis spent the 2009–10 season with Maroussi Athens, where he played in the Greek first division, and also in the top-tier level European-wide competition, the EuroLeague.
With Panionios, he also played in the European-wide secondary level competition, the EuroCup, in the 2012–13, and 2013–14 seasons.
In early 2021, he moved to AEK Athens, serving under head coaches Vangelis Angelou, Stefanos Dedas and Curro Segura.