Exact Samsung Galaxy S26 Ultra Battery Capacity (mAh) & Specs

Illustrative image, not an official Samsung product photo.

Samsung’s own comparison page lists the Galaxy S26 Ultra with a 5,000mAh battery. That is the exact number readers usually want first, before the rumor mill starts adding and subtracting a few hundred milliamp-hours for drama.

The more useful part is what Samsung pairs with it: 60W wired charging, 25W wireless charging, and Wireless PowerShare. On a spec sheet, that combination tells you more about the phone’s day-to-day feel than the capacity number alone.

If you are comparing the S26 Ultra with the rest of the S26 line, the battery story is simple: the Ultra keeps the largest pack in the family, but it is the balance of battery size, charging speed, and display load that decides how it behaves in real use.

Exact Samsung Galaxy S26 Ultra battery capacity

The short answer is 5,000mAh. Samsung lists that figure on its official S26 series comparison page, so this is not a leak, a rumor, or a guess pulled from a spec aggregator. It is the number Samsung itself uses when it compares the Galaxy S26, S26+, and S26 Ultra.

That matters because capacity numbers get repeated loosely across the web. Some sites round them up, some list rumor-stage figures, and some bury the real spec under performance talk. Here, the clean answer is enough: the Galaxy S26 Ultra battery capacity is 5,000mAh.

If you only need one line for a buyer sheet or a review note, use that figure and move on. The rest of the story is about what Samsung does with it.

What the charging specs actually change

A battery spec can look flat on paper until you pair it with charging speed. The S26 Ultra’s 60W wired charging changes the way the phone fits into a workday, because it reduces the penalty of a low-battery stop. You are not forced to leave the device parked for long stretches just to recover a meaningful percentage.

Wireless charging at up to 25W is less dramatic, but it still matters if you keep the phone on a desk, stand, or night charger. It is the difference between “slow top-up” and “steady, usable refill,” especially if you tend to top off in short sessions instead of waiting for a full charge cycle.

Wireless PowerShare is the small spec that tends to get ignored. In practice, it gives the phone a secondary role: a quick backup source for earbuds, a watch, or another compatible device when you do not want to hunt for another charger.

Galaxy S26 vs S26+ vs S26 Ultra battery comparison

Samsung’s own lineup makes the battery positioning very clear. The base S26 is the smallest battery option, the S26+ sits in the middle, and the Ultra keeps the largest pack plus the fastest wired charging.

The comparison is useful for more than bragging rights. It shows Samsung is not treating the Ultra as a battery monster for the sake of it; instead, it is using a moderate increase in capacity and a larger jump in charging speed to make the phone feel faster in everyday use.

What buyers should care about before choosing the Ultra

Battery capacity is only one part of the decision. If you keep a phone for heavy camera use, long work sessions, or navigation-heavy travel, the Ultra’s 5,000mAh battery is attractive because it gives you more headroom before you start caring about the charger.

If you are comparing models for business use, the more important question is consistency. A phone that charges quickly and stays predictable is often more useful than a slightly larger battery that charges slowly. That is where the S26 Ultra makes sense: it tries to reduce both downtime and charging friction.

Bottom line

The exact Samsung Galaxy S26 Ultra battery capacity is 5,000mAh. That is the number Samsung lists, and it is the one worth using if you want a clean spec answer instead of speculation.

What makes the Ultra stand out is the full package around that battery: 60W wired charging, 25W wireless charging, and Wireless PowerShare. Put together, those specs make the phone feel like a practical flagship, not just a big number on a label.