- This Sandberg 20,000 mAh power bank packs plenty of power to keep your gadgets topped up on the move- Its six foldable solar panels mean you can recharge in the sun - perfect for beach days or camping trips- Charge three devices at once with its two USB and one USB Type-C ports- The clear LED display lets you know the battery levels and charging status- Its built-in flashlight comes in handy when you're outdoors after dark- Thanks to its IPX4 rating, it can handle splashes and dust without a worry