car phone charger circuit 1. output 5V 500mA~2000mA. 2. Input ... -24V. 3.for iphone,telephone,camera,etc 4.CE A:car phone charger circuitSpecification 1. Input voltage: 12-24V.2. Output ... devices including iphone, cell phone, PDA, digital camera, MP3/MP4,GPS,PSP,ect.