The Galaxy S11 series is very likely to have much longer battery life in aggregate, compared to its S10 series predecessors. The reasoning behind this speculation is not only that it will probably run on more efficient processors than the ones we have now, or that Samsung will use a newer generation more frugal OLED display tech.
While both of these are true, the Galaxy S11 may have better battery life than the S10 simply because the eventual battery capacities indicate that the packs will be much larger. The battery of the eventual Galaxy S11e, or whatever Samsung calls it, leaked packing 3730mAh, against a 3100mAh battery in the S10e.
The regular S11 is said to boast the Note 10+ battery of 4300mAh or the Galaxy A71's 4500mAh unit, depending on whose rumors you choose to believe. In both cases, that's way above the 3400mAh in the S10 model. As for the Galaxy S11+, today Korean media reiterates that it may pack a battery close to the 5000mAh mark, like the Galaxy M30.
The reasoning? Well, the 120Hz displays and 5G versions of the S11 series are going to be battery hogs, so Samsung will have to up the ante in the endurance department. Also, Huawei, and even, surprisingly, Apple with the 11 Pro Max, are eating its lunch in the flagship battery life department.
That huge 5000mAh or so battery pack will be supplied by LG, it turns out, in addition to whatever Samsung's own SDI subsidiary can muster. "LG Chem currently mass produces the cells for the up-and-coming Galaxy phones from its Nanjing plant in China," tipped industry sources.
That's explicable, given that LG Chem is the world's largest lithium-ion battery producer by capacity, but also marks the first time that LG batteries will be used in the Galaxy S-line. Samsung is obviously content with the job that LG did with the batteries of the Note 10 series, and has tasked it with the initial S11 series supplies, too.
We already told you how Samsung has arrived to this drastic bump in capacities - by using a custom PMP packaging method for the cells that reduces the size of the wrapping significantly, and allows for either smaller packs with the same capacity, or way more juice content in the same battery size that is in the S10 series.
The same firm that is supplying said PMP modules to Samsung for the S11 models, will also be supplying Apple, eventually for its iPhone 12 series, so 2020 is shaping up to be the year of the battery life bump, even for high-end handsets with high-res displays. Fingers crossed.