boxchip_shop via eBay offers the Power Bank 20,000mAh Power Bank in White, Blue, Pink, or Green for $11.69 plus $2.95 for shipping. That's $3 under our last mention of a 20,000mAh external battery pack and the lowest total price we could find for any 20,000mAh dual outlet external battery pack by $3. The battery pack features two USB outlets and four connectors.