BARCELONA — Qualcomm's Quick Charge 3.0 technology will let phones with the Snapdragon 820 processor recharge from 0 to 80% in about 35 minutes, but Chinese phone maker Oppo has just announced its own battery-charging technology that blows it away.

Announced at Mobile World Congress, Oppo claims its new Super VOOC charging technology can recharge a smartphone from dead to full in only 15 minutes. How insane is that?

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Additionally, Oppo says phones with Super VOOC will use special algorithms to maintain low temperatures while charging at such high speed.

There are some catches to Super VOOC, though. First, while the technology will be compatible with microUSB and USB-C cables, that fast charging time only applies to phones with a 2,500 mAh (milliamp-hour) battery. That means phablets with larger batteries won't recharge that quickly. And a lot of people use phablets these days.

Second, the technology is exclusive to Oppo phones. Oppo may have sold 50 million smartphones last year, but its phones don't exactly have the same global audience as Apple's iPhones and Samsung's Galaxy devices.

Oppo devices are popular in China and other Asian countries, but how likely are you — if you aren't an Oppo phone user — to switch to Oppo just for Super VOOC? I can probably deal with using a battery case/pack or waiting a little longer with Quick Charge 3.0. I'm not that impatient.

Still, what Oppo's engineered here is impressive and could be a harbinger of things to come from others. We're finally seeing some real improvements for phone batteries and recharge times.