How long it will take to charge my device with Philips USB connector?

It depends on the charging current required by the mobile device and the age of the battery in this device: * The greater the charging current required, the longer the charging time * The older the battery, the longer the charging time The USB connector of this product gives a 500mA current. Generally speaking, it would take 1-3 hours to fully charge a MP3 player. For tablet, due to a much higher charging current needed, it may take up to 20 hours.