The Patona Dual LCD USB Charger allows for the quick, simultaneous, and independent charging of two batteries. It doesn't matter if the two batteries have the same capacity. Additionally, the charger features a USB output, enabling the parallel charging of third-party devices. The integrated microcontroller-controlled charging technology automatically detects the required voltage of the inserted battery and prevents overcharging or overheating. The charger offers two charging modes: "L" for normal, battery-friendly charging and "H" for fast charging. Important information such as the charging status, active USB port, use of the car adapter, and charging mode is displayed on the LCD screen.