Charging on the charging treasure, one is fast charging, one is slow charging, such as the Android charging head before the kind of wide under the narrow, is slow charging, fast charging is the rectangle is larger, larger than the ordinary charging head, this is fast charging can use fast charging to charge the charging treasure can also use slow charging to charge the charging treasure, It is mainly to distinguish the plug of his head to distinguish the small is slow charge, the big is fast charge.