DIY 18650 UPS Boxs Power Adapters USB 5V 9V 12V Output

USB port output: 5V 2A. As USB for cellphone tablets and more devices,3in1 design,easy to use. 5.5x2.1mm port output: DC12V 1-3A. 5.5x2.1mm port output: 9V1A.

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