China's Oppo announces a smartphone battery that fully charges in 15 minutes

Smartphone manufacturer’s latest quick-charge technology promises safe, fast and low-temperature charging of full-size smartphone batteriesChinese smartphone manufacturer Oppo has announced that its latest technology, due to hit handsets this year, will fully charge a phone in 15 minutes.
The company’s Voltage Open Loop Multi-step Constant-Current Charging – what it calls VOOC – technology, which launched in 2014, mirrored technology from Qualcomm and others that allowed