Update: This deal has ended.

Aukey currently has a bunch of promotions available for its products on Amazon, including the 20000mAh Portable Charger with Lightning and Micro-USB input for only $17. This offer is available when you enter promo code 8XR76RMA at checkout.

This power bank is a best-seller on Amazon due to its giant capacity (it can recharge an iPhone 7 Plus 4.5 times) and Lightning input. The dual USB ports can push a combined 3.4A of power to two devices at once, and with its AiPower, the charger is tuned to adapt to each device to provide the safest maximum recharge rate. Rated 4.3 out of 5 stars with over 400 reviews on Amazon, the Aukey Portable Charger is a sure bet.

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If you're looking for some extra Lightning cables for when you travel, we'd recommend going with Anker's PowerLine+. The 3-pack is currently on sale for $17.99, bringing the cost per cable to just $6.

See at Amazon

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