There are 1000’s of backup batteries on the market, but I don’t know many that double as a digital clock and have a big LED display that shows charging status like the FENGENIUS Power Cube from Brando. The FENGENIUS is a power bank with a 5200mAh Li-Polymer battery, an aluminum case and an LED display that shows the time of day and charging status. It’s available in either silver or black and is priced at $48. That seems a little pricey considering it has a relatively small battery capacity, but the unique features are interesting. For more info visit Brando.