1. On smartphones: Most Android and iOS devices have built-in battery health detection. For example, on the iPhone, you can view the maximum capacity and peak performance capacity and evaluate the health of the battery by going to Settings, selecting Battery, and then selecting Battery Health.
2. On the laptop: Users of Windows system can check the general usage of the battery in "Power Options". In order to predict the battery health and life more accurately, it may be necessary to use third-party software or directly contact the manufacturer for testing. Mac users can check the battery status in the system report. The path is as follows: From the Apple menu, select About this machine, then click System Report, select Power in the left navigation bar, and then click View Health.
3. On smart devices: smart watches, tablets, etc. , there is usually a similar battery status viewing function in the system settings.