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OPPO confirms 40W fast charging is bad for battery longevity

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OPPO had just recently released the Ace 2, a phone so decently specced that consumers who are looking for a sub-$600 (specific price tag of $565) smartphone might find hard to resist. It comes equipped with a Qualcomm Snapdragon 865, an in-screen fingerprint sensor, a 90Hz display, and everything else expected to come with a device of its tier and cost.

UPDATE as of May 15, 4:05PM: OPPO sent us an official statement regarding the issue and clarified that the new OPPO Reno Ace 2 has TÜV Rheinland certification. According to OPPO lab’s tests, the battery can last for up to 800 cycles with at least 91% battery health remaining. Check out the table below.

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One of the stellar selling points of the OPPO Ace 2 is its 4,000 mAh battery capacity that handles 65W fast wired charging and 40W wireless charging. This means that this phone charges faster than many of OPPO’s previous offerings in the smartphone space—even against many of its competitors.

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However, as fascinating the idea of a snappy charging time is to most people, it does come with a caveat that OPPO itself confirmed to Anandtechthe battery that charges at a 40W rate degrades its longevity to 70% as fast as 15W degrades a battery’s lifespan to 90%.

That level of attrition may not seem to be a major issue if phone models of today are designed with removable batteries. Sadly, this is hardly the case anymore due to smartphones’ architectural shift somewhere in history. 

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But on the bright side, there are not that many people who stick to a phone for more than 3 years anyway. And, if ever any phone did suffer a degraded battery over time due to constant charging at a high-wattage rate, there is always the option to manually replace the device’s battery with a brand new one as needed. 

Now, the question is — how bad is the battery degradation for the 65W SuperVOOC charging of the OPPO Find X2 Pro?

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