10400mAh Portable UPS Uninterruptible Power Supply for LED Lamp Speaker Phone

Make sure you do not mind before you order. Output: USB 5V 2A. Output: 5.5x2.5mm 9V1A 12V1A. 1x One-to-One 5.5x2.5 male to 5.5x2.5 male DC-Power Cable.

eBay