For example, consider these charging scenarios for the Retina iPad mini. A lithium ion battery should only be charged at a certain rate once it nears capacity, both for safety and to help preserve the longevity of the battery.
Related 7. Having no manufacturer label on the device could also be a red flag.
Our advice: I travel a lot and would prefer not to take multiple adapters along. We haven't tested it yet, but it should charge your iPhone exactly as fast as all of Apple's other USB-C power adapters.
Today's Top Stories.
Conversely, if you use a tablet charger for your smartphone, it'd charge up faster than normal Note: Lauren Goode Lauren Goode.
You pick up a cheapie from your nearest electronics retailer and hey, what gives?
Elise Ackerman Contributor. Let's take a closer look at how each phone performs when charged up with each of these five power adapters. That sound you hear is your wallet crying.
Turns out not all chargers are created equal, even if they look similar.
But a rate that is just barely above 1C is nothing to be concerned about, he added. It's a lot faster than the 5W adapter included with the phone, but not quite as fast as the 12W adapter.
Most portable batteries are rated at 1C. Elon Musk: To determine a C-rate, simply take the ratio between the charging rate and the capacity of the battery as measured in mAh or milliampere-hours. But we wanted to see how well that stands up to using the adapter that comes with your phone, and the 12W adapter that Apple includes with iPads.
Is it even worth it? Because larger devices like tablets have substantially bigger batteries than smartphones, chargers designed for the former tend to deliver energy at a higher rate a higher current.