75% OFF ONE TIME OFFER (Just $49.99): High Battery Capacity of 20,000 mAH. Wireless charging. The BackUp Solar Bank automatically recognizes the wireless charging of your phone. Small enough to carry and can handle the most challenging tasks under any weather condition. Compatible with most cellphones and electronic devices: The BackUp Solar Bank has a bi-directional fast charging type C port, USB port and USB QC3.0 fast charging output port.