Why does the Redmi 13C 5G charge abnormally when using non-standard charger?

The reasons for abnormal charging conditions are listed below:
1. A non-standard charger with abnormal output Vbus will drop below the Vsleep voltage (V3.9V) when the IBUS is relatively small, causing chip sleep and stopping charging. When charging again, the charging pop-up window will repeatedly pop up;
2. A normal charger will not drop below 5V when fully charged, so this problem will not occur. Please use the standard charger;
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