Charging Speed and Efficiency Battle Between Two Flagship Giants
In the latest wave of flagship smartphones, charging performance has become one of the most defining factors for buyers. The Xiaomi 17 Pro Max and Samsung Galaxy S24 Plus both promise excellent power management and charging efficiency, but their approaches differ drastically. While Xiaomi focuses on ultra-fast wired and wireless charging, Samsung prioritizes long-term battery health and stable performance. This detailed comparison explores how both devices perform in real-world charging conditions.
The Xiaomi 17 Pro Max is equipped with a massive 7,500mAh battery, one of the largest seen in a flagship phone this year. It supports 100W wired charging and 50W wireless charging, setting a high standard for speed and flexibility. The Galaxy S24 Plus, on the other hand, carries a 4,900mAh battery with 45W wired charging and 15W wireless charging. On paper, Xiaomi clearly leads in raw power delivery, but the actual user experience often depends on heat management, charging curve optimization, and system efficiency.
During a full charging cycle test, the Xiaomi 17 Pro Max completed a 0 to 100 percent charge in around 31 minutes using its official 100W charger. Within just 10 minutes, it reached approximately 55 percent, which is ideal for users who need a quick top-up before heading out. The larger battery does extend the final charge time slightly, but the results remain impressive. Meanwhile, the Galaxy S24 Plus took about 63 minutes to reach full capacity using Samsung’s certified 45W charger. It reached 50 percent in roughly 25 minutes, which is respectable but slower compared to Xiaomi’s rapid charge curve.
Thermal control is another key factor where both brands show different philosophies. Xiaomi employs a multi-layer vapor chamber cooling system that regulates temperature during high-wattage charging. Even under continuous 100W charging, the temperature remains within safe limits, averaging around 40°C. Samsung, in contrast, limits its charging rate dynamically based on heat and battery condition to ensure longevity. This means that while the S24 Plus may not hit the same speeds as Xiaomi, it maintains consistent thermal efficiency and longer battery health over time.
Wireless charging further separates the two. Xiaomi’s 50W wireless charging capability allows the 17 Pro Max to fully recharge in about an hour and fifteen minutes when paired with a compatible stand. This makes it one of the fastest wireless systems available today. The Galaxy S24 Plus supports 15W wireless charging, which takes around two hours for a full charge. However, Samsung’s wireless system remains more compatible with third-party chargers and offers better stability during overnight charging sessions.
In terms of battery endurance, Xiaomi’s larger cell naturally delivers longer screen-on time. Heavy users can expect around two full days of moderate use, while Samsung’s smaller battery typically lasts a day and a half under similar conditions. Despite the difference, both phones show excellent standby efficiency thanks to adaptive power management in their software. The Xiaomi 17 Pro Max uses HyperOS battery optimization tools, while the Galaxy S24 Plus benefits from Samsung’s One UI energy management features.
Both devices also offer reverse wireless charging, allowing users to power accessories like earbuds or smartwatches. Xiaomi provides a higher 10W reverse output, whereas Samsung’s implementation is capped at 4.5W. While not a major deciding factor for most, this highlights Xiaomi’s continued focus on speed and versatility in power delivery.
Overall, the charging test results clearly favor the Xiaomi 17 Pro Max in terms of raw performance. Its combination of a larger battery, higher wattage, and efficient cooling technology results in some of the fastest charging speeds in the industry. The Galaxy S24 Plus, however, maintains a more conservative balance between speed and long-term battery durability. Samsung’s approach may be slower but caters to users who prioritize consistent performance and safety over time.
In conclusion, if fast charging is your top priority, the Xiaomi 17 Pro Max stands out as the undisputed winner, delivering near-instant refueling for heavy and demanding users. It’s ideal for travelers, gamers, and professionals who need quick power boosts throughout the day. On the other hand, the Galaxy S24 Plus remains a reliable performer that focuses on gradual charging and longevity, perfect for users who prefer stable thermal management and a trusted ecosystem. Both phones represent the best of their respective design philosophies—speed versus sustainability—and each one delivers exceptional results based on the needs of the user.
