The sophisticated USN1 contains a smart charging management system, which monitors battery status and displays voltage, charging current, temperature, battery capacity, and battery power level on the LCD monitor. Then, it automatically chooses the most appropriate charging mode based on this data. The device also provides battery condition monitoring, carrying out a health inspection and reporting cell status as good, normal, or poor on the LCD.

The USN1 offers mechanical protection against reverse polarity, preventing charging from occurring if an incompatible or incorrectly installed battery is present. Additionally, the error message "EE" will appear on the LCD to notify you if a short-circuited battery is detected.

Built for durability, the USN1 is made from polycarbonate and ABS plastics that are corrosion-resistant and fire-retardant. The charger operates in full compliance with ISO9001 quality control and management guidelines, and meets CE, RoHS, FCC, CEC, REACH, KC, and C-TICK standards.