Suaoki (99% positive feedback) via Amazon offers its 20,000mAh Portable Generator with DC and USB ports for $159.14 shipped when the on-page coupon code is clipped. That takes $40 off the regular price and is $10 less than our previous mention. This generator sports dual 2.4A USB ports, a DC outlet and more. Rated 4.2/5 stars by nearly 200 Amazon customers.
Suaoki Portable Generator Features:
Store solar energy or AC power in a portable box and use it anytime anywhere. It is a great travel companion for outdoor enthusiasts and it comes in handy in power failures as well. Up to 200W running/250W starting of power in a portable, silent and zero-emissions electric generator of Suaoki, and it requires no electrical know-how to simply charge the unit via AC wall adaptor or 15V above solar panels. Meanwhile, it is a gas-free generator with a pure sine wave output to efficiently power up your lights, smartphones, tablets, appliances or electronic devices without overload.