Xiaomi released its 210W mobile charging technology via its Redmi sub-brand in late October, and this was finally surpassed by a 240W version from Realme — part of the Oppo and OnePlus family — in early February. Considering that it’s MWC week, Xiaomi quickly answered today with a staggering 300W demo that reduced charging time to just under five minutes — almost half that of the two aforementioned feats. Because of a superior modular construction and heat dissipation on the inside, Xiaomi claims that its new 300W charger is the same size as its previous 210W version.
The 300W demo used a Redmi Note 12 Pro+ with a 4,100mAh battery, which is somewhat less than the 4,300mAh battery included in the 210W Redmi Note 12 Discovery Edition (and the Realme has a far more generous 4,600mAh). As shown in the video, the phone reached 20 percent in just over a minute, 50 percent in 2 minutes and 12 seconds, and 100 percent in just under 5 minutes. The charger had a peak input of somewhat more than 290W, and it also managed to maintain 280W and above for around two minutes at one time.
According to the business, the battery here has more powerful 15C cells (as compared to the Discovery Edition’s 10C cells), which use novel carbon materials in lieu of some of the traditional graphite portions, lowering the electrodes’ thickness by 35%. This lithium-ion battery, when combined with a better electrolyte composition, may pack a greater power density with a quicker charge and discharge rate, while also lowering the amount of heat created in the process. These ultra-thin cells are then layered with thermal materials in between as part of a revolutionary “sandwich” design to improve heat dissipation while conserving interior space. In terms of safety, Xiaomi claims that over 50 features are incorporated into the system to monitor the current, voltage, and temperature on each charging chip.
Xiaomi’s statement today has undoubtedly established a new standard for the mobile industry, albeit the firm has not said if its 300W charging technology would be mass manufactured. Xiaomi also did not provide charging cycle data, which serves as a serious reminder of how increasing charging power might effect battery longevity.
