Which charger and cable fast-charge every Redmi 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. The Redmi 15, Redmi Note 15, Redmi Note 15 Pro and Redmi Note 14 Pro reach their top rate only with the charger from their box — any WisdomUp charger charges them safely, more slowly. The Redmi 15C supports USB PD, so a 20W USB-C PD charger fast-charges it, below its top rate. The Redmi A5 and Redmi A7 Pro top out at 15W, so a 20W USB-C PD charger is rated above what they need.
The Redmi A5, Redmi A7 Pro, Redmi 15C and Redmi Note 14 Pro — their spec sheets list a 3.5mm jack. The others need USB-C handsfree or Bluetooth earbuds.
About 0.9–1.3 full charges: these phones have 5,200 mAh–7,000 mAh batteries, and about 60–70% of a power bank’s rated capacity reaches the phone.