Beeebo-US via Amazon offers the dodocool 10,000mAh Portable Battery Pack with Built-in Micro-USB Cable in Black for $24.99. Coupon code "EDTHVXXF" cuts that to $14.99. Plus, Prime members bag free shipping. That's $10 off and the best price we could find. It features four battery LEDs and a USB type-C adapter. Deal ends March 20.