1Sale offers 5,200mAh Mobile Power Bank with Hand Warmer Function for $11.99 (orig. $24.99) +Free Shipping

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This power bank has a large, 5200 mAh lithium rechargeable battery, which lets you charge your electronic device at any time and even on the go. The power bank doubles as a hand warmer, helping warm up your cold hands, getting the circulation going, and relieving aches and pains.