Amazon Basics High-Capacity Portable Charger Power Bank with 3-Port Output, 20,000 mAh, Black

This is a good deal for a 20,000 mAh power bank from Amazon Basics, especially if it's a restock at a lower price point. Woot is a reputable retailer, and this capacity is generally useful for multiple device charges. The price of $12.99 seems competitive for this type of product, offering good value.