External battery for Portable DVD player or TV 9V

External battery for Portable DVD player or TV 9V/12V Features: Rechargeable battery for Portable DVD player or TV and other devices which require 9V/12V power supply.Battery capacity 66Wh.Output voltage :9V,12V optional .Output current :2.5ABattery gauge :four stage charge level indicator.Charge time ( Fully discharged):3 hours.Charger output power :18.0V 2ASize/Weight :157*76.4*22(mm)/420gFunctions: Compatible for most Portable DVD player or TV and other devices which require 9V/12V power supply.Various circuit protection functions to ensure the safety and stability of the item,such as protection for over-charge,over-discharge,excess current and over-heat.It has LED indication alarm and low power alarm.Out of power can be placed at anytime anywhere.