Samsung may have found a smart way to speed up Galaxy S27 Ultra charging

Apple gave Samsung an unusual taste of its own numbers game this year. The iPhone 18 Pro Max arrived with a 5,391mAh rated battery, edging past the Galaxy S26 Ultra’s 5,000mAh cell, while Apple also substantially improved wired charging to match Samsung. While the next Galaxy Ultra is already rumored to respond with a 5,700mAh battery, Samsung may have another trick planned for getting that larger cell topped up faster.

According to leaker WalleGalaxy, the Galaxy S27 Ultra will retain the S26 Ultra’s 60W charging rating. However, Samsung is reportedly working on charging optimizations that would let the phone hold higher power levels longer during the early stages of a charge.

The leaker claims the Galaxy S27 Ultra could sustain around 55W to 56W for longer than its predecessor. That seemingly small change could make the phone charge about 2% to 3% faster than the Galaxy S26 Ultra, despite its larger battery.

In other words, Samsung may be trying to improve the charging curve rather than simply raising the headline wattage. The S26 Ultra already supports 60W Super Fast Charging 3.0 and can reach around 75% in 30 minutes, according to Samsung.

Apple offers an interesting benchmark here. The iPhone 18 Pro Max can reach 50% in about 15 minutes with a compatible 60W charger. However, it remains unclear how much of that performance comes down to its steel-case battery design, charging curve, or other thermal and power-management choices. Whether Samsung’s rumored approach can produce similarly impressive early charging on a larger S27 Ultra battery is something we’ll have to wait to see in real-world testing.

Some obvious questions remain, including whether or not the rest of the Galaxy S27 family might use the same approach to charging. Samsung is expected to unveil the Galaxy S27 lineup early next year, so more details should surface well before launch. Until then, the interesting part of this leak isn’t that 60W is sticking around, but that Samsung may have found a way to make the same charging ceiling work harder.