The Georgian currency unit is lari, where 1 lari is 100 tetri. Currency rates are fluctuating, but 10 lari amount to approximately 3,7 USD (August 2023). Check current exchange rates here (TBC Bank).
International credit cards are widely used in bigger shops and restaurants. As ATM machines are found in many places in central Batumi, there is no need to bring cash. The ATM machines operate in Georgian, Russian and English. Don’t confuse ATMs and Pay Boxes, that are used for all kinds of payments. Major banks are Bank of Georgia, Cartu Bank, Liberty Bank and TBC Bank.
One of the biggest bank officies in central Batumi is TBC Bank’s central office on Zubalashvili Street 37 (entrance also from Chavchavadze Street 34).