Titan HW-25EC 5Amp USB Car Power Charger (3 USB Ports) Support iPod, iPhone & iPad, MP3, MP4, Smartphones, Tablet PC, GPS or PDA Maximum output: total 5Amp to better your charging efficiency Provide 3 USB ports: one USB provides a fixed output with 2.5Amp and the other two provide an output with 2.5Amp in total PWM intelligent output controller offers a balance between high and low output