- Sep 3, 2009
Did you know that if you use a iPad charger to charge your iPhone, it'll be fully charged in half the time?
All my friends say this is bad for the battery and I disagree, I tell them the iPhone 6 and newer are built to handle that much so it's fine, whereas iPhone 5S and below simply wouldn't accept any more than 5 watts. They simply say "scientifically speaking, ramming more power into a cell is just going to damage it" and I just go wtf and quit arguing. Who's right?
The charge rate using the iPad power adapter is well within the safe charging rate for the iPhone's LI Ion battery. This has been discussed in numerous other threads. The built in charger circuits in the phone keep the charge rate safe and draws only what it needs based on battery charge level. Larger wattage power adapter offers additional amps, it does not push them in. The iPhone regulates what it takes. Will not reduce battery lifetime. If you want to maximize battery lifetime, keep charge between 40% and 80%. This will help battery last for 8 to 10 years. But why, the phone will be on it's fourth owner so what do you care.Over a long period of time it probably would be bad. But for the 1 to 4 years that people typically hold on to their iPhones, the impact will likely be minimal, and easily offset by the 'win' of faster charging. This is my guess as to how Apple sees this.