??Dual USB 3.1A Charger??Dual quick charge 3.1A USB ports provide 4x faster than normal chargers,support two compatible devices simultaneously, it’s a Big Time-Save ; Suitable for all popular QC3.0 devices ,also deliver the fastest possible charge to Non QC 3.0 surpported devices; ??Voltage Meter??Blue LED Voltage Display monitories the golf cart battery in real time and indicating the voltage in screen, let you know the battery status while driving.NOTE:when the voltage under 12V,you need to pay attention to your golf cart in case there’s something wrong; ?? Aluminum Alloy Shell??Aluminum alloy body ,scratch resistance keeps it sturdy&durable;This Upgrade metal usb charger will not be overheating at high temperature, which is more safer than plastic one; ??Full Protection,Safe Charge Guarantee??Built-in Smart IC Chip will intelligently detect your devices and charging devices at optimal current; Resisting Over-load, Over-heat, Over-voltage, Over-current and Short-circuit. A waterp