Samsung may improve Galaxy S27 Ultra charging speeds without raising its reported 60W peak. According to leaker @WalleGalaxy, the phone could hold high charging power for a longer portion of the cycle, allowing its rumored 5,700mAh battery to reach full charge slightly sooner than the 5,000mAh cell in the Galaxy S26 Ultra.
The change would concern the charging curve rather than the maximum wattage. Phones do not maintain peak power from empty to 100%, typically reducing it as the battery fills. Extending the period at elevated power could shorten total charging time even while adding 700mAh of capacity.
| Phone | Charge after 30 minutes | Time to full charge |
|---|---|---|
| Galaxy S26 Ultra | 76% | 49 minutes |
| iPhone 18 Pro Max | 71% | 68 minutes |
A 5,700mAh battery would represent a 14% capacity increase over the 5,000mAh packs used across several recent Galaxy Ultra generations. That increase would not automatically produce 14% longer battery life, since display, chipset and software power demands remain important factors.
Neither Samsung nor the leaker has provided a specific Galaxy S27 Ultra charging time. Temperature management and long-term battery health will also be key unknowns if Samsung is pursuing faster real-world charging through curve optimization rather than a higher wattage rating.
