12V for Dc Rechargeable Lithium ion battery, 5000mAh high capacity, small size and easy to carry. Inner Positive(+), Outer Negative(-). 5.5x2.1mm port output is for Dc 5V2A,9V/1A,12V/1A,Suitable for wifi Router LED Strip CCTV Camera and more 5V 9V 12V device. Mini UPS uninterruptible power supply is a standby energy storage power supply. safe and environmental lithium cells, This mini UPS with perfect over-charged, over-discharged, over-current and short-circuit for. Before use,you must adjust the voltage before turning on the switch,5V 9V 12V can be adjustable,if the 5.5x2.1mm port can not fit your devices,you need to buy convertor,for most LED strip light products, CCTV Camera, IP Camera , LED Panel, Amplifier, Modem, Speaker, Car DVR and more. Material: ABS Color: Black Capacity: 5000mAh input: AC 100-240V 50/60Hz 5.5x2.1mm port output: for Dc 5V2A,9V/1A,12V/1A max Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. Package Contents: 1x UPS Uninterrupted Backup Power Supply