Aukey Direct via Amazon offers the Aukey 20,000mAh External Battery Pack Power Bank in Black or White, model no. PB-015, for $35. Coupon code "3NINBLGS" cuts it to $26.99. With free shipping, that's $43 off list, $8 under our mention from last fall, and the lowest total price we've seen. It features LED indicators, 2.1-amp input, 3.1-amp output, flashlight, and is compatible with most USB devices.