Xiaomi is currently working on a fast charging technology that charge a dead battery to 100% in just 17 minutes.
Xiaomi SuperCharge Turbo Technology
In that video posted by Xiaomi’s brand president, Lin Bn, we see a 4000mAh battery charged full in just 17 minutes. Xiaomi has compared this technology to Oppo 50W (10A/5V) SuperVOOC that can charge a 3700mAh battery to 65% in 17 minutes and to 92% in 30 minutes. It was declared as the fastest charger of all time.
This upcoming charging technology will be features in Mate X, and will charge the 4500mAh battery full in 35 minutes.
However this new invention is still in the testing stage and will be announced in few hours.