Anker's biggest external charger is back down to $30 today, if you know the promo code. That's an all-time low on one of the most popular and best-rated battery packs on the market.
A pack this size might seem like overkill, but it's awesome for long plane rides, and absolutely critical during emergencies, power outages, and camping trips. [Anker 2nd Gen Astro E5 16000mAh External Battery Pack, $30 with code 2ASTROE5]
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