Galaxy S25 Edge Claims Battery Advantage Over Ultra Model (In a Certain Way)
The Samsung Galaxy S25 Edge boasts a battery with higher energy density compared to the Galaxy S25 Ultra, but the implications of this are not as significant as they might seem. The S25 Edge features a 3,900mAh battery paired with a 6.7-inch display, which is surprisingly smaller than the capacity offered by the Galaxy S25, which has a 6.2-inch display. According to a teardown analysis by WekiHome, the energy density of the Galaxy S25 Edge’s battery is measured at 758Wh/L, slightly surpassing the S25 Ultra’s 5,000mAh battery, which has an energy density of 727Wh/L.
However, despite the higher energy density, the practical battery life remains limited. The S25 Edge’s 3,900mAh battery is a standard battery size, and if Samsung had opted for a silicon-carbon battery, the capacity could have been improved significantly. Silicon-carbon batteries offer notable advantages in energy density.
For example, the OPPO Find N5 features a 5,600mAh battery with an impressive energy density of 810Wh/L, achieved through the use of advanced battery technology. If Samsung had implemented a similar approach, the Galaxy S25 Edge could have potentially housed a 4,200mAh battery without increasing its size. Although this is still a modest improvement, it would enhance the device’s performance in terms of battery life.
Additionally, the Galaxy S25 Edge’s thin profile of 5.8mm is a key selling point, offering a sleek design. While the OPPO Find N5 is thinner when unfolded, it is important to note that it is a foldable smartphone, and such devices generally have an advantage in thickness during the unfolded state.
