Why choose our 4-port USB fast car charger ? -The high-performance main control chip is protected by five layers of circuit, which is safer to use. -The built-in management chip can intelligently split and quickly charge without hurting the machine. - LED digital display, real-time monitoring of battery voltage, and grasp the health status of the car at any time. - Multiple circuit protection gives you a sufficient sense of security and can better protect your car and equipment. - Which can meet the simultaneous fast charging of Android, apple mobile phone, iPad and other devices. Specifications: Material: Aluminum Alloy materials and streamlined shell design. Size:6*3.85*2cm/2.36*1.52*0.79inch Package include:1* 4-port USB fast car charger Matters needing attention: 1. The charger may be hot during use, and it is normal that the temperature does not exceed 60 degrees at normal room temperature 2. The charger will stop working after overcurrent, instability and short-circuit protection 3.Do not immerse this product in water 4.Do not transform or disassemble this product 5. Avoid charging in places with high temperature or sun exposure. Too high a temperature will affect the charging effect See more[Durability and reliability]: The 22.5w 4 ports USB fast car charger is applicable to cars, trucks, buses and other 12V / 24V models. The advanced intelligent circuit safety system can prevent short circuit, overheating, overcurrent and overcharge, effectively protect equipment batteries and ensure safety. [Smart chip]: Smart chip, multiple security protection - temperature protection, over discharge protection, over-current protection, short circuit protection, over-current protection. Multiple circuit protection gives you a sufficient sense of security and can better protect your car and equipment. [4-port USB Car Charger Adapter]: 4-in-1 intelligent fast charging, four port power supply, QC3.0 & PD fast charging, built-in management chip, intelligent shunt fast charging without hurting the machine, which can meet the simultaneous fast charging of Android, apple mobile phone, iPad and other devices, and ensure stable and continuous charging. [Upgrade digital display car charging]: LED digital display, real-time monitoring of battery voltage, and grasp the health status of the car at any time. To prevent your phone from being overcharged or charged to the wrong voltage, which may cause damage, the LED light screen can display the voltage of the car battery at any time to ensure safer charging. [High quality materials]: The 4-port USB fast car charger with digital display is made of aluminum alloy materials and streamlined shell design. The high-performance main control chip is protected by five layers of circuit, which is safer to use. The built-in management chip can intelligently split and quickly charge without hurting the machine.