New information from international certification databases has revealed what could be a major drawback for Samsung’s upcoming flagship. According to leaked TÜV documents, the Galaxy S26 Plus will offer no significant battery upgrade over its predecessor  -  a move that could disappoint many loyal users.

The device, listed under the model number SM-S947U, recently surfaced in TÜV’s certification system. Initially thought to be the upcoming Galaxy S26 Edge, further discoveries  -  including a matching listing in India’s BIS database  -  now confirm that this is indeed the Galaxy S26 Plus.

The TÜV report shows that the phone will house a 4,755mAh lithium-ion battery. While this may seem acceptable at first glance, it's the exact same capacity found in the Galaxy S25 Plus. Samsung is likely to continue marketing it as a “4,900mAh” battery  -  rounding up the actual figure  -  as it did with the previous generation.

In terms of charging, the S26 Plus is also expected to stick with 45W wired fast charging  -  again, identical to last year’s model.

While no official mention of wireless charging was made in the TÜV filing, a recent leak suggests that the Galaxy S26 series could support faster Qi2 wireless charging. Currently, Samsung’s devices support a maximum of 15W wireless charging under the Qi standard. If the rumors prove true, the S26 series could jump to 25W wireless charging  -  a welcome, though still modest, improvement.

The certification leak also revealed two upcoming Galaxy A-series models. The SM-A376B, believed to be the Galaxy A37 5G, features a 4,905mAh battery and supports 45W fast wired charging  -  nearly identical to last year’s A36 5G.

Meanwhile, the Galaxy A57 5G (model SM-A576B) is also confirmed to support 45W fast wired charging. While its exact battery capacity wasn't disclosed, past reports suggest it will retain the 5,000mAh battery from the Galaxy A56 5G.

Why battery matters now more than ever

Samsung’s Galaxy S line has long been celebrated for its powerful processors, high-end cameras, and premium displays. But battery life remains one of the few areas where the South Korean tech giant consistently trails behind competitors.

This is especially problematic in a year when rivals like OnePlus are rumored to be pushing battery capacities to new heights. The upcoming OnePlus 15, for instance, is expected to feature a 7,300mAh battery  -  far outpacing the Galaxy S26 Plus’s estimated 4,900mAh cell.

Battery tests of the Galaxy S25 Plus showed around 7.5 hours of continuous use, while some competitors, including the OnePlus 15, can surpass 10 hours on a single charge. Even with a highly efficient chipset and optimized software, the significant gap in raw battery capacity is hard to ignore.

Of course, not every phone needs to chase extreme battery sizes like the 10,000mAh pack in the Honor Power 2. But as users demand more from their devices  -  streaming, gaming, video calls, and productivity  -  a more substantial increase in battery performance would certainly be welcomed.

For now, the leaked data suggests the Galaxy S26 Plus might struggle to meet those expectations.

Hai Phong