Review on Starting device booster EAFC 20000mAh 1200A Portable start-charger for the car. jump starter. powerbank. buster. by Bambang ᠌

The device came fully charged in a cardboard box, there is no wardrobe trunk (case, bag, etc.) for storage (this is a minus). What does the inscription on the box "50% efficiency when charging the phone" mean, I did not understand. The case is made soundly, without cracks. Instruction in English. Included are crocodiles, charging from the network and a "type C" cable (charging the device through it is a plus). There are two USB OUTPUTS 5V 2A on the device. The compass is a joke from the manufacturer (if you don't start, there is a chance to get out on foot). The flashlight shines and blinks (even red and blue, like a chandelier on traffic police cars). See photo.