At MWC 2022, Oppo introduced a SuperVOOC charger with a capacity of 150 W in a compact size, which can charge a 4,500 mAh battery smartphone to 50% in 5 minutes and to 100% in 15 minutes. Besides, Oppo also introduced SuperVOOC fast charging technology with a capacity of up to 240 W that helps to charge the phone to 50% in 3 minutes 30 seconds and under 10 minutes to reach 100%.
Honor also introduced at MWC 2022 the Magic 4 Pro smartphone with 100 W fast charging. Last year, Xiaomi's Mi Mix 4 was equipped with 120 W fast charging that allows fully charging the battery in just 15 minutes, 50W wireless fast charging for allow to fully charge the battery within 28 minutes.
In addition, there are now other fast charging technologies such as OnePlus' Warp Charge, Realme's SuperDart Charge, Vivo's Super Flash Charge... Most of them have a capacity of over 80 W. Fast charging is getting better and better. users shorten the charging time for the phone. This is a positive point in the context of battery technology that has not been improved. However, the charging capacity parameters are not necessarily accurate.
According to experts, the charging capacity announced by the manufacturer is often a gimmick because smartphones actually do not receive such capacity. For example, if the charger supports a capacity of 100 W, the phone will only receive about 80% (ie 80 W) due to losses when the current moves, thermal and physical effects.
Fast charging is being considered as one of the standards on mid-range and high-end smartphones in recent years. However, experts say that charging too fast will not be good for smartphone batteries, because the high current when charging into the phone will produce a large heat source, which is easy to explode or in the long run will cause both the battery and the device to decrease. longevity.
However, fast charging optimization technologies are only applied by smartphone manufacturers on high-end products. For the mid-range and low-cost segments, these features may not be equipped, so it may cause the battery life of the device to decrease faster.
Therefore, experts say that super-fast charging is only a temporary solution. Instead of trying to find smartphones with this technology, users can choose models with large battery capacity, moderate charging speed, and optimized features to help them last longer.