In a world where charging speeds are increasing day by day, the most important question for smartphone users remains: “Is it Fast shipping Does it really damage the battery? There's no definitive answer. That's why HTX Studio tried to uncover the truth in an extensive experiment that lasted several months, using a range of Apple phones to test the difference between slow and fast charging in real-world conditions. The results surprised many and challenged common misconceptions about the correct way to charge a phone.

Fast and slow charging
In a six-month experiment, the HTX Studio team (a YouTube channel specializing in technical reviews, innovative technology, and electronic products) conducted an in-depth test. For iPhone batteries To determine how charging speed affects performance and lifespan over time, the team used six iPhone 12 models to conduct a realistic and accurate test simulating everyday user experience.
The experiment began by repeatedly charging the phones from 5% to 100%. Three devices underwent fast charging, while the other three were charged slowly. In a separate experiment, another group of phones were charged within a different range, starting at 30% and stopping at 80%, to determine if keeping the battery within this range maintained its efficiency better.
Experiment results

After 500 full charge cycles, the team examined the remaining capacity in each battery and discovered that the difference between fast and slow charging was negligible. Fast charging did not appear to cause any noticeable deterioration in battery life. Maintaining the charge between 30% and 80% showed only a slight benefit, but it wasn't significant in real-world use.
At the end of the experiment, the team concluded that the best way to charge an iPhone is simply the method you prefer. There's no need to worry excessively about charging speed or percentage. The difference in performance is negligible and not worth sacrificing your convenience or overthinking technical details.
It should be noted HTX Studio tested the effects of fast charging on 40 phones over two years. The experiment involved precisely charging and discharging the devices under various conditions, including different charging speeds and battery levels, to reveal the impact on battery health and phone performance. The test also included comparisons with Android phone batteries, and the results showed similarities, confirming that modern technology is now capable of handling fast charging efficiently and without any issues.
In conclusion, while recent studies show that fast charging doesn't pose a real threat to the battery, some simple habits can help maintain its efficiency for as long as possible. It's advisable to avoid leaving your iPhone charging for extended periods after it reaches 100%. Also, avoid exposing the device to high temperatures while charging. Regularly updating your operating system is also recommended, as iOS includes features and improvements for power management. Furthermore, if you're a heavy smartphone user, consider enabling the Optimized Battery Charging feature, which automatically slows down charging at certain times to preserve battery life in the long run.
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