Results

The results are quite clear. Fast charging does not lead to significantly reduced battery capacity after 500 charging cycles on either iPhones or Android phones. Always using your smartphone in the “ideal” range between 30 and 80% capacity can result in a slight increase in capacity after numerous charging cycles. In the test, this amounted to 4% more capacity for iPhones and 2.5% more for the Android phones tested. Nevertheless, the tester’s conclusion was: it makes virtually no difference how or how quickly you charge your smartphone battery.

From minute 3:40 onwards, other questions about batteries are addressed, such as whether it is better to store them when they are half-charged, fully charged or barely charged. A week may not be long enough, but no difference in capacity was observed during this period. Incidentally, the effort that went into this video is only half the story. As the last few minutes of the video show, there have been two similar experiments in the last two years, but they did not yield conclusive results. The anecdote about the tester’s first iPhone, which ends the video, is also quite touching.