Galaxy S27 Ultra Battery Upgrade

Samsung Galaxy S27 Series Set for Battery Upgrade

The Samsung Galaxy Z Fold 8 isn’t even in shops yet, but attention has already turned to its next big thing. According to Dutch website GalaxyClub, the Samsung Galaxy S27 series – specifically the battery tech within the S27 Pro and S27 Ultra – is set for a significant upgrade. The Galaxy S27 Pro model will carry a 5200mAh battery, while the range-topping Galaxy S27 Ultra will come equipped with a 5700mAh or even 5800mAh cell.

The latter follows directly on from the Samsung Galaxy S26 Ultra with its 5000mAh battery, which was the sixth consecutive year of the same figure. This would represent a 14 to 16% increase, which could prove to be a meaningful upgrade. The Samsung Galaxy S26 Ultra has been a popular choice among UK consumers, and this upgrade could make the S27 Ultra an even more attractive option.

Samsung’s Battery History

We’ve been waiting for Samsung to increase the capacities of its batteries in the Galaxy S series for some years now, as rivals such as Xiaomi, Oppo and Honor have moved well beyond it. The company has been understandably cautious about pushing the envelope with battery technology given its complicated history with exploding handsets – an issue that popped back up quite recently.

This rumour would appear to confirm that Samsung is finally adopting Silicon Carbon (Si-C) technology, which enables the use of far denser batteries, producing bigger batteries without increasing phone thickness. This technology has been used in other devices, such as the Apple Watch Series 10, and has shown promising results.

The same website recently claimed that both of these phones will feature 50Mp main and ultra-wide cameras, and that they could also feature a new 16Mp square front camera, rather like that of the iPhone 17. We’ll likely have to wait until January for Samsung to announce its new Galaxy S line-up. In the meantime, keep your eyes peeled for our Samsung Galaxy Z Fold 8, Z Fold 8 Ultra and Z Flip 8 reviews.

The Samsung Galaxy S25 was a great device, but it lacked the battery life of some of its competitors. The S27 Ultra, on the other hand, could be a game-changer. With its increased battery capacity and improved camera capabilities, it could be the perfect device for anyone looking for a high-end smartphone. The iPad Air M2 is also a great option for those looking for a tablet with a long battery life.