The Galaxy S25 have forgotten the best technology of the year

A sublime integration with Geminiinteresting news in the photographic section, the more powerful processor of the industry and a new design that we had been waiting for years for the most advanced model. These are some of the improvements that have made the Unpacked 2025 and that Samsung has shown as the main assets to buy one of the new Galaxy S25, S25+ or S25 Ultra. But, like everything in this life, you cannot get everything right in each section, and There is one that the Korean company has completely forgotten about.

What is the great lack of the Samsung Galaxy S25? The battery. The company has not moved a single figure from one year to the next, and maintains the same mAh in each of the models. The design and dimensions hardly change in the new devices – beyond the new Ultra – which could justify the lack of news in this section.

Samsung has gone too far when it comes to talking about its batteries, autonomy and fast chargingimplying that it is a section without much room for improvement. Is this true? Are there any relevant milestones in the industry? Has Samsung been left behind?

The Galaxy S25 forgets the most important novelty in the battery industry in recent years

We are not exaggerating in the slightest. During the last quarter of 2024, the battery industry—specifically those for mobile phones—has achieved a very relevant milestone: the marketing and distribution of silicon-carbon cells. Not only are they fully developed, but there are already several smartphones on sale that integrate them.

A good example is the Xiaomi 15a device that was presented in China a couple of months ago with a increase of almost 900 mAh compared to the previous generation. The most interesting thing? Its thickness has only increased by 0.1 millimeterspractically nothing. All thanks to the higher energy density of silicon-carbon.

Even much more modest models are betting on this technology. In the mid-range is the Honor Magic7 Litea newcomer to Spain that we have been able to test and that boasts of 6,600 mAh in a 7.98 millimeter body and 189 grams of weight. To put this data in perspective, the Galaxy S25 Ultra has a 5,000 mAh battery that is 8.2 millimeters thick.

With these figures on the table, it is impossible not to think that Samsung has missed a good opportunity to make a difference. Opting for silicon-carbon batteries in the Galaxy S25 series would have been a true revolution and a very important leap compared to the previous generation.

Only time will tell if Samsung is wrong with this decision, although one thing seems quite obvious: the competition, especially that which comes from China, wants to revolutionize autonomies by 2025 and make mobile phones with huge batteries that are not limited by a thicker or heavier design than normal. It’s a shame that Samsung hasn’t jumped on this boat.

Fast charging, but not too fast

This 2025 we not only have identical batteries to the 2024 generation, also a fast charge that does not move a single watt (W). Samsung is once again betting on 45 W in the Galaxy S25+ and S25 Ultra, while at the bottom of the list is the Galaxy S25 with a power of 25 W.

It is another section that leaves us with a bittersweet taste. Samsung and Apple are fighting a lonely battle for slow fast charging, and while the market is not asking for abysmal 200W powers, it is supporting brands that choose to raise the level a little and allow 80 or 90 W recharges.

The figures of the new mobile phones, without being considered slow – the 25 W of the Galaxy S25 yes, everything must be said – They are at the bottom of the industrysomething that does not quite add up when we talk about three mobile phones that intend to reign in the high-end for much of 2025.

The Samsung Galaxy S25 are great devices, they come with a good dose of AI, several of the best cameras of the year and unparalleled power for gaming, but they have not managed to finish off and justify the generation step when we talk about battery and fast charging. Using silicon-carbon would have been the culmination, but Samsung wanted to reserve this technology for later.