Which charger and cable fast-charge every OPPO phone from the last few years — with the facts for each model.
Phone specs from each phone’s spec page (WhatMobile, GSMArena, the maker) — open a model for its source.
A USB-C charger and cable. OPPO says the OPPO A6, OPPO A6s, OPPO Reno 15F and OPPO Reno 16F take 13.5W from a plain USB PD charger; their top rates need OPPO’s own charger. The OPPO A6k tops out at 15W, so a 20W USB-C PD charger is rated above what it needs.
The OPPO A6s — its spec sheet lists a 3.5mm jack. The others need USB-C handsfree or Bluetooth earbuds.
About 0.9–1.1 full charges: these phones have 6,100 mAh–7,000 mAh batteries, and about 60–70% of a power bank’s rated capacity reaches the phone.