Cellet Super Fast Universal 20 Watt (4.2 Amp) Dual USB Port Car Charger for iPhone iPad Samsung S3 S4 S5, Note 2 3 HTC One and Other Smartphones & Tablets - Black/Gray Charge two tablets simultaneously Provides 2.1 amps of power per each USB port (4.2 amps total) Smart circuit technology protects against overcharging, overheating and overcurrent Input: 1A-2.3A / Output Max 4.2A (2.1A/2.1A) Use your existing USB charging cables to charge most USB powered devices Charge your iPad or iPad mini with your personal Apple data cable