If the battery is in poor contact with the mobile phone, remove the battery, use a clean cloth to wipe the metal contact between the battery and the mobile phone, and try to reinstall it; 2. If the mobile phone is an all-in-one device, the battery is not removable. Ensure that the mobile phone version is the latest version to eliminate system exceptions. 3, flash charge requires an ambient temperature of 15 degrees --45 degrees, below or beyond the normal temperature range, in order to ensure safety, will be in ordinary charging mode.
< br >
4, flash charging to about 80% of the electricity, there is no flash charging icon, flash charging uses high current fast charging, small current change to ordinary charging, when the flash charging to about 85%, the battery voltage is close to the larger value, to meet the requirements of ordinary charging, so it will be converted into ordinary charging (flash filling will be strongly affected by high and low temperatures, It is recommended to use the original VOOC flash charger and data cable to charge at room temperature)
I consulted OPPO customer service about this problem before, they said that there are several stages of mobile phone charging, and the current in different stages is adjusted, and the current is gradually adjusted less at the 90-100 stage, so this stage takes a relatively long time.