Citycoco batteries utilize a variety of standard and specialized interfaces to facilitate power output, charging, and communication, designed for safety, efficiency, and compatibility. The primary power and charging interface is typically a 3-pin integrated port, which combines both the charge and discharge functions into a single socket. This is the most common interface, often an IEC C13/C14 compatible connector, providing a secure and stable connection for high-current power transfer. It is usually protected by a waterproof rubber or plastic cap to maintain the battery's overall ingress protection rating.

In addition to the main 3-pin port, several other interface types are commonly found. XT60 or XT90 connectors are often used as auxiliary power outputs or for internal connections due to their ability to handle high currents reliably. Some models also feature a separate USB port (usually USB Type-A) integrated into the battery or scooter body, allowing riders to charge mobile devices. For communication and diagnostics, certain high-end Citycoco batteries include a UART or CAN bus communication interface, enabling the BMS to transmit real-time data like voltage, current, and temperature to the scooter's display or a connected mobile application. The interface design prioritizes anti-oxidation and anti-loosening properties, with gold-plated or nickel-plated contacts to ensure good electrical conductivity and prevent corrosion over time, even in challenging environmental conditions.