- With 20000 mAh capacity, this Ugreen power bank can fuel up your smartphone, tablet, and even laptops - It's got a USB Type-A and three USB Type-C ports, so you can charge up to 4 devices at the same time - Stay worry-free with its built-in protection against overheat, overcharge, and short circuit - Its LCD display shows you the battery level and charging status - Power Delivery tech gets your devices back to 100% in no time