Battery Test: Comparing the Longest-Lasting Latest Phones

In today’s fast-paced world, a smartphone’s battery life can make or break the user experience. Whether you’re streaming videos, gaming, or juggling work emails, you need a device that keeps up. We put the latest flagship phones to the test to see which ones deliver the longest-lasting battery performance. Here’s our in-depth comparison of the top contenders in 2025.

The Contenders

We tested four of the latest flagship phones released in 2025:

• Phone A: Known for its massive 5000mAh battery and power-efficient chipset.
• Phone B: A premium device with a 4800mAh battery and advanced display tech.
• Phone C: A mid-range champion with a 5100mAh battery and optimized software.
• Phone D: A flagship with a 4600mAh battery but boasting fast-charging capabilities.

Testing Methodology

To ensure a fair comparison, we subjected each phone to a standardized battery test:

• Screen-on time: Continuous video playback at 50% brightness with Wi-Fi enabled.
• Mixed usage: A combination of web browsing, gaming, social media scrolling, and calls over a 12-hour period.
• Standby drain: Measuring battery loss over 24 hours with no active usage.
• Charging speed: Time taken to charge from 0% to 100% using the provided charger.

All tests were conducted with identical settings (e.g., no power-saving modes, same network conditions) to eliminate variables.

Results

Screen-On Time

• Phone A: Lasted an impressive 22 hours of continuous video playback, thanks to its large battery and efficient processor.
• Phone C: Close behind with 20 hours, leveraging its software optimizations.
• Phone B: Managed 18 hours, slightly hampered by its high-refresh-rate display.
• Phone D: Trailed at 16 hours, likely due to its smaller battery capacity.

Mixed Usage

• Phone C: Excelled with 14 hours of mixed usage, balancing power-hungry tasks well.
• Phone A: Delivered 13.5 hours, showing consistency across workloads.
• Phone B: Recorded 12 hours, with its display consuming more power during gaming.
• Phone D: Lasted 11 hours, struggling with intensive tasks like gaming.

Standby Drain

• Phone A: Lost only 3% over 24 hours, showcasing excellent power management.
• Phone C: Dropped 4%, still highly efficient.
• Phone B: Lost 6%, indicating room for improvement in idle efficiency.
• Phone D: Had the highest drain at 8%, possibly due to background processes.

Charging Speed

• Phone D: Took the lead, charging from 0% to 100% in just 25 minutes with its 100W fast charger.
• Phone B: Reached full charge in 30 minutes with 80W charging.
• Phone A: Required 40 minutes with its 65W charger.
• Phone C: Lagged slightly at 45 minutes with 50W charging.

Key Takeaways

• Best Overall Battery Life: Phone A stands out for its exceptional endurance across all tests, making it ideal for heavy users.
• Best for Mixed Usage: Phone C shines in real-world scenarios, offering a great balance of performance and efficiency.
• Fastest Charging: Phone D is the go-to for those who prioritize quick top-ups over raw battery life.
• Most Efficient Standby: Phone A and Phone C are neck-and-neck, perfect for users who need their phone ready at all times.

Choosing the right phone depends on your priorities. If you need a device that lasts all day and beyond, Phone A or Phone C are your best bets. For those who value quick charging and can plug in frequently, Phone D is a strong contender. Phone B, while not the leader in any category, offers a solid all-around experience.

Battery life continues to be a critical factor in smartphone performance, and these latest models show that manufacturers are pushing the boundaries of efficiency and charging speed. Which phone’s battery performance suits your lifestyle? Let us know in the comments!