He was arrested on Friday after posting a video on Facebook complaining about the decision.
On Saturday, his detention was extended by another 48 hours and he started a hunger strike.
He was charged with "defaming the Palestinian authority," a crime under the very expansive cybercrime law of the PA.
Banat has been arrested numerous times before, most recently in August when he criticized corruption in the PA.
While some militant groups and media in the territories have criticized these arrests, the English language media and international human rights organizations are typically silent for his many arrests.