Faster charging lowers battery life. Since iPhones cannot easily change batteries, they are designed to charge slower.
Faster charging lowers battery life. Since iPhones cannot easily change batteries, they are designed to charge slower. - Yo-YoI use my iPad charger, which at 2.1 amps, recharges my iPhone 6 faster than the fastest time listed. . . But Apple doesn't include one with the iPhone. - Swordmaker
IMHO these three comments pretty much cover the waterfront. Swordmaker's iPhone very well might give a shorter lifetime because of the use of a higher capacity charger.I confess to an incomplete understanding as to how a higher capacity charger can work without imposing a higher voltage on the battery. I would assume that it has lower internal resistance, but that would only say that the the voltage doesnt drop as much from its nominal value under load.