The Nitecore UCN4 Pro USB charger has been specifically designed for Canon camera batteries of models LP-E19, LP-E4, and LP-E4N. This professional charging solution features a built-in USB cable for versatile power supply, allowing operation via power banks, computers, or USB adapters. The charger integrates a comprehensive LCD display for real-time monitoring of battery voltage, charging current, progress status, and battery health assessment. Made from flame-retardant black polycarbonate with optimized thermal management, the unit maintains safe operating temperatures during charging cycles. Electrical specifications include an operating voltage of 5V/2A or 9V/2A with maximum output capacities of 1000 mA in QC mode when operating in single slot mode or 600 mA per slot when charging two batteries simultaneously. The standard mode provides a 500 mA output. Safety features include reverse polarity protection, short circuit protection, and detection of depleted batteries. The charger is compatible with Canon EOS digital SLR cameras including the EOS-1D X Mark II, EOS-1D X, EOS-1Ds Mark III, EOS-1D Mark IV, EOS-1D Mark III, and the Cinema EOS model EOS-1D C. Its dimensions are 105 mm in length, 65 mm in width, and 30 mm in height, with a weight of 120 g. The universal design ensures reliable performance for both stationary and mobile charging needs.