The vessel has both 220-volts and 110-volts. Bring converters/ adapters (the 2 round prong style) if wanting to plug into the 220-volt and European style plugs. The majority of plugs in Cuba are normal flat American style. Devices should not be left unattended while charging in your cabin. Fireproof charging bags – Lipo [lithium polymer] Guard – are available for purchasing online or check with your local dive shop.