Car charger 1a2a is 2a fast charge.
The higher the amperage, the higher the charging speed, but the fast charging also has to deal with the battery of the mobile phone to the spleen and stomach disease,
Not all brands of car chargers can be compatible with all car charger, we are still very Yang Xiaoxin mobile phone impact, we must be careful to use their own. I hope it works.
Car charger 2a is fast charge.
The two jacks of the car charger, one is the output current is 1A, one is the output current is 2A,2A is mainly used for PAD, specifically the difference is, can be mixed, is the problem of charging speed, with 2A charging mobile phone, very fast, but the mobile phone battery will be very hot, with 1A charging PAD, will be very slow.
High current charges fast, so 2A charges fast.