Believe it or not, the Samsung Galaxy S25 Edge one-upped the Galaxy S25 Ultra in the battery department… but not the way you think. The Galaxy S25 Edge’s battery has higher energy density than the Galaxy S25 Ultra.
The Galaxy S25 Edge does offer a higher-density battery than the ‘Ultra’, but… it doesn’t matter
So, no, the battery life is not better, of course. The Galaxy S25 Edge actually has a rather tiny battery considering its size. It includes a 6.7-inch display and a 3,900mAh battery pack. That battery offers even less capacity than the Galaxy S25 with a 6.2-inch display.
Based on a teardown video by WekiHome, the Galaxy S25 Edge’s battery has an energy density of 758Wh/L. The Galaxy S25 Ultra’s 5,000mAh battery, on the other hand, has an energy density of 727Wh/L.
Does this matter to you? Well, no, not really. Regardless of the energy density, this is a 3,900mAh battery, and a regular battery at that. If Samsung used a silicon-carbon battery, it could have achieved a much higher density, and thus increased the mAh value as well.
Silicon-carbon batteries have a notably higher density
For comparison’s sake, the OPPO Find N5 has a 5,600mAh battery with an energy density of 810Wh/L. So, considerably larger than either of the two Samsung phones. OPPO is using a silicon-carbon battery, however. That allowed the company to keep the same size but increase the capacity on the inside.
If Samsung used a silicon-carbon battery, it would have ended up with a 4,200mAh battery, presuming it’s the same size as this one, basically. That’s not a lot, but it’s still an improvement that would matter here.
The Galaxy S25 Edge is extremely thin at 5.8mm, which is one of its main selling points. Yes, the OPPO Find N5 is thinner, but only when it’s unfolded. That’s a foldable smartphone. Foldable phones tend to be thinner than that when unfolded.
2025-06-13 15:07:06