Aukey Direct via Newegg offers the Aukey 20,000mAh External Battery Pack Power Bank in Black, model no. PB-N15, for $19.99 with free shipping. That's $10 off list and the lowest total price we could find, although we saw it for $2 less on Black Friday. It features four LED indicators, 2.1-amp input, 3.1-amp output, built-in flashlight, and is compatible with most USB devices. Deal ends December 12.

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