It works, but it's not up to 55W
The OnePlus 7pro comes with a 30W Warp flash charge with a 5V-6A charger rating of 30W;
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Use the original OnePlus 7Pro charger (WC0506A1HK) to charge the OnePlus 7Pro. After turning on WARP flash charge, it can charge 55% in 30 minutes.
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It should be noted that the Oneplus 7Pro mobile phone cannot achieve fast charging in the use of QC or PD fast charging head, and can only achieve 15 watts fast charging in the PD protocol