Today only, Amazon Gold Box is the Jackery Giant + 12,000mAh Dual USB Battery and flashlight for $29.95 with free Prime Shipping. That’s $100 off the original price and the lowest we’ve seen it. It offers 2 USB ports for charging both tablets (2.1A) and phones (1A) and gets impressive 4.6/5 star reviews from almost 5000 Amazon reviewers.

Some other notable USB batteries from Amazon right now, some of which have better specs/$:

The Bonus Goldbox is the Eton Rukus All Terrain Portable Wireless Speaker for $44.99 shipped. While it might not be the Best Sounding Portable Bluetooth Speaker on the market, the fact that it is portable solar charging makes it a pretty amazing package and $45 is by far the lowest we’ve ever seen this priced. It gets impressive 4.4/5 star reviews and features and 8-hour battery (plus more if you are outside in the sun!), rugged water dirt and drop resistant and USB port for charging external devices.

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