Xiaomi's 300W demo fully charges a phone in five minutes
from Realme — part of the Oppo and OnePlus family — in early February. Given that it's MWC week, today Xiaomi swiftly responded with a whopping 300W demo, which brought the charging time down to a little under five minutes — almost half that of the two aforementioned achievements. Xiaomi added that this new 300W charger comes in the same size as its earlier 210W counterpart, thanks to a better modular design plus heat dissipation on the inside.
The 300W demo featured a Redmi Note 12 Pro+ modified with a 4,100mAh battery, which is a little smaller than the 4,300mAh in the 210W Redmi Note 12 Discovery Edition . As you can see in the video, the phone reached 20 percent in just a little over one minute, followed by the 50 percent mark in 2 minutes 12 seconds, and then 100 percent in just a little under 5 minutes.
The company said the battery here pack more powerful 15C cells , which consist of new carbon materials in place of some of the conventional graphite parts, thus reducing the electrodes' thickness by 35 percent. Together with an improved electrolyte formula, this lithium ion battery can pack a higher power density with a faster charge and discharge rate, while apparently reducing the amount of heat produced in the process.
Xiaomi's announcement today has definitely set another milestone for the mobile industry, though the company didn't mention whether this 300W charging tech will be mass produced. Nor did Xiaomi share figures on charging cycles, which makes for a sober reminder of how battery lifespan can be affected by higher charging power.
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