Last month Oppo announced its latest flagship phone, the Reno Ace, with a headline feature of the world’s fastest fast-charge solution yet. Oppo’s 65W SuperVOOC 2.0 fast charger is claimed to be able to charge the Reno Ace’s 4,000mAh battery in half an hour, which would put it ahead of all other competing technology on the market.

I have the Reno Ace in hand now, and I can confirm that it is indeed the fastest-charging phone available — if not quite as fast as Oppo’s claims.

Two minutes and 39 seconds after plugging the Reno Ace in, the screen turned on to indicate a one-percent charge. Here’s how it went over the next half-hour:

• 5 mins: 10 percent
• 10 mins: 37 percent
• 15 mins: 57 percent
• 20 mins: 76 percent
• 25 mins: 92 percent
• 28 mins:…

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