Charge 2 devices simultaneously with the Belkin 24-Watt BOOST?CHARGE Dual USB-A Car Charger. This compact charger offers faster-than-standard charging speeds and an LED indicator to let you know when it's connected to a power source. Simply plug into your vehicle's power socket to start charging. You'll have a combined power of 24 watts with each port offering 12 watts of quick and safe power that's faster than a standard 5 watt charger.