You probably know by now that Anker’s PowerCore line is your favorite brand of USB battery packs, and the 20,000mAh model is marked down to just $27 today, the best price we’ve seen.
For reference, that’s enough juice to charge an iPhone 6s about seven times, or a Galaxy S6 about five times, making it perfect for sharing during long flights, camping trips, conferences, or extended Pokémon Go sessions. Just note that this deal is only available today, and only for Prime members.
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