The latest innovation in battery tech for smartphones has not been in the battery itself, but rather in the speed at which it that battery charges. OEMs have also increased battery sizes to try to improve battery life which has worked out pretty well. Most modern smartphones with some sort of rapid charge built in can get a 50% charge in about 30 minutes. This is pretty common now. Battery life doesn't matter as much when you can charge your battery this quickly.
OPPO however is looking to one up current fast charging technology with the release of the Find 9. According to sources the device may include the "Super VOOC Flash Charge" Tech announced at MWC earlier this year. The technology would allow the Find 9's 2500mah battery to charge from 0%-100% in only 15 minutes. The test battery at MWC was 2500mah, but hopefully the Find 9 will sport a larger battery.
via KKJ