Mobile phone chargers can be roughly divided into travel chargers, dock chargers, USB chargers and maintenance chargers. The latest one is the mobile phone case charger.
The overall appearance of the mobile phone case charger is the same as that of the ordinary mobile phone case, and the mobile phone case is slightly thicker than the ordinary mobile phone case. It has a battery capacity of 2300mAh, which can provide a complete one-time charge. Generally, lithium batteries or dry batteries are used as power storage units.