A 2A charger represents a powering device with a large output current and a fast-charging speed. The 2A charger is highly preferred to the 1A charger due to its charging speed and safety, as it poses no threat to the durability of a battery. Notably, A is an acronym for ampere, which refers to current units. The state of the load determines the output current of a charger. For instance, if a charger output is 20A and the phone charging logic control is 2A, the charging speed is not affected by the present charging current of 2A. An effective phone charger design comes with circuit protection that ensures consumer safety when the wind is too high. In brief, the 2A charger is a powering device with a maximum output charging current of 2A and a faster-charging speed.