How long does the Samsung Galaxy S25 Ultra battery last on a single charge?

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The Samsung Galaxy S25 Ultra delivers excellent all-day battery life thanks to its 5,000mAh cell and efficient Snapdragon 8 Elite processor. In testing, the phone lasted over 17 hours, making it the longest-lasting Samsung phone to date.

What to expect for screen-on time:

• Average users: 8-10 hours of active screen use
• Light users (calls, messaging): 10-12 hours
• Heavy users (social media, gaming): 7-9 hours

The adaptive 120Hz display intelligently manages power, but switching to 60Hz mode adds roughly 15% more battery life when you need it. Social media apps drain battery fastest due to background activity, while video streaming is surprisingly efficient.

Important: New phones need 4-6 weeks to optimize battery performance as Samsung's software learns your usage patterns. Don't judge battery life during the first month.

With the Samsung 45W Super Fast Charger, you can go from empty to 70% in just 30 minutes, making it easy to top up during breaks.

The Galaxy S25 Ultra comfortably handles heavy daily use and stretches into a second day for lighter users. Battery anxiety is genuinely a non-issue with this phone.