How much does iqoo9 battery health decline in a year?

About 85%. IQOO9 mobile phone has been used for one year, and the health of the battery is about 85%, which is relatively normal. Methods to keep iqoo battery healthy;

1, don't play games while charging, so the battery will be very depleted, but some people do like to play while charging. Try to avoid playing while charging, and the battery will last longer.

2. You can use the charging treasure when you can't go out. Try not to use it at home, because the model specifications and data may not match the mobile phone, which may damage the battery.