There is still no clear answer to the question of whether fast charging is harmful to the battery. In general, there are many different myths around this topic.
Fast charging makes it possible to spend less time charging the device due to increased current or voltage. If for normal charging there is enough voltage of 5 V and current strength of 2-2.5 A, then for fast charging you need somewhere around 20 V and 5 A. Also, most fast charges are “smart” charges.
Using fast charging, the phone charges in several stages. When the 50-70 percent mark is reached, fast charge turns into slow charge as the charge power automatically decreases. This is because the faster the battery charges, the faster it can fail. So you can be sure that fast charging does no more harm to the battery than a simple charge.
In general, it is not recommended to use third-party power supplies for charging. This is explained by the fact that such charges charge slower and cause rapid battery wear.
Experts do not recommend covering the smartphone with a thick cloth, object or using thick cases when fast charging. Because of all this, the device can easily overheat and even explode. Yes, and using the phone during fast charging is also not recommended.
If you are in doubt whether to leave your smartphone on fast charge overnight, we have good news for you: You can do it. True, it is still not worth charging the device every night.
Source: Ferra
