No damage to the charging device, because we use smart chips to provide stable charging current ,Built-in overheat, overcharge, overcurrent, overload, surge, short circuit protection in the multi usb charger, protecting your devices automatically and greatly extending the battery lifetime of your devices. With 20 Smart USB ports, that can each charge at upto 2.4A your devices can get charged much faster then regular 1A chargers! Adaptive smart chip detects and delivers the optimal charging current for connected devices. Phone docking station protects against overcharge, overcurrent and short circuit.

MULTIPORT CHARGER - Has 40 ports, the maximum output of a single USB port is 2.4A, the total output power can reach 200W and is compatible with many devices, such as iOS tablets, Android phones and other digital devices. LCD DIGITAL DISPLAY - When you use this smart USB charging station for your device, the LCD screen will automatically show the current and voltage of each port, and also monitor the charging status of the device in real time. Smart Charger: Adaptable smart chip detects and provides the best charging current for connected devices.

LARGE LED SCREEN: Show the charging status of every USB ports. Anti-fire material with over voltage, over-current, short circuit protection. Worldwide 100-240 volt AC input voltage. ULTRA POWERFUL: 8 ports pump out 40 watts of power, enabling simultaneous multi-device charging. Maximises charging efficiency and more secure.