Based on insider information, Samsung at one point experimented with a prototype of the Galaxy S27 Ultra that was outfitted with a substantial 7000mAh battery. However, the version that eventually makes it to mass production might not feature this particular battery configuration. Rather, it is anticipated that the battery capacity will be maintained within the range of 5700mAh to 6000mAh. Additionally, Samsung explored a prototype that omitted the built-in S Pen. By excluding the S Pen, the device could potentially accommodate a 7000mAh battery, but this would come at the expense of losing the S Pen functionality.