Why Charging Is Slow After 90 percent?
When it comes to charging our smartphones, we all want it to be as fast as possible. However, many iPhone users have noticed that charging can slow down significantly after the device reaches 90% charge. In this article, we will explain why charging is slow after 90% and what you can do to speed it up.
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The Technical Reason
The main reason for this slow charging is something called “trickle charging.” Trickle charging is a technique used to slow down the charging rate after a certain point in order to prolong the overall lifespan of the battery.
When a lithium-ion battery is charged, the voltage of the battery increases. Once the voltage reaches a certain point, typically around 90%, the charging rate begins to slow down in order to prevent overcharging. This is known as the “absorption phase” of charging. During this phase, the voltage of the battery is maintained at a constant level, and the charging rate slows down significantly. This is done to protect the battery and increase its longevity.
How to Speed Up Charging
One way to speed up charging is to use a higher-wattage charger. For example, if you’re using the standard 5W charger that comes with the iPhone, upgrading to a 12W or 18W charger can significantly increase the charging speed.
Another option is to use a power bank or portable charger. These devices can charge your iPhone quickly and are great for when you’re on the go.
A third option is to put your iPhone in “Airplane mode” or “Low Power mode” while charging. This can help speed up the charging process because your phone isn’t using as much power while it’s charging.
Conclusion
While it may be frustrating to deal with slow charging after 90%, it’s important to remember that this is a safety feature designed to prolong the lifespan of your battery. By using a higher-wattage charger, a portable charger, or putting your phone in airplane mode, you can speed up the charging process. However, it’s important to note that even with these methods, charging will not be as fast as when your phone is below 90% and it will still take some time to reach a 100% charge.
