The battery capacity of the 44 mm Galaxy Watch4 has been steadily increased by Samsung in comparison to its predecessor, however this has not been the case with the 40 mm model. According to a Safety Korea certification, the future generation would have improved versions of both sizes.
It’s going to be another incremental update, and week-long battery life still isn’t viable for smartwatches.
EB-BR900ABY will feature a 276 mAh battery, which is an increase of 29 mAh over the previous model’s 247 mAh. Battery capacity has been increased from 361 mAh to 397 mAh for the Watch5 44 mm (EB-BR910ABY).
Please keep in mind that this is for the vanilla watch, and we aren’t quite certain of the watch’s dimensions (e.g. the Watch3 had a 45 mm version, not 44 mm). Other Watch5 models haven’t received certification either.
Of course, battery life is a function of both battery capacity and hardware efficiency. Watch4 generation featured 5 nm processor Exynos W920 which is more efficient than the 10 nm Exynos 9110 used in the Watch3 series or 12 nm Snapdragon Wear 4100 used in certain non-Samsung watches. A new, more efficient wearable chipset is improbable since 4 nm foundries are operating at full capacity.
According to previous reports, the next-generation watch from Samsung would include a built-in thermometer that can be used to monitor skin temperature (useful to detect early signs of infection as well as tracking ovulation cycles).
For now, we don’t know much about the Galaxy Watch5 generation, but we’ll learn more about it as the new models move closer to introduction.