https://www.youtube.com/watch?v=k5heirwcjn8 External battery Cool 65W (20,000 mAh) loads up to 4 devices at the same time. Rechargeable portable universal battery of 20,000 mAh ideal to load your smartphones, tablets, digital cameras, MP4 and other devices where and when you want. Especially made with sufficient power to load laptops, tablets and...