Inside CNET’s 33-Phone Charging Speed Benchmark
CNET’s lab put 33 smartphones through a standardized charging speed test to create a clear quick charge comparison across brands. Each phone began with 10% or less battery before entering two separate 30-minute trials: one using wired charging and another, where supported, using wireless pads that matched or exceeded each device’s maximum rated speed. The test setup used the bundled cable and a charger capable of hitting the phone’s top wired wattage, while wireless charging leaned on Qi, Qi2 or Qi2.2 standards up to 25 watts. For phones with proprietary high-speed wireless systems, such as certain international-only models, CNET scored them separately on the brand’s own charger. The lab then averaged the wired and wireless results into a single charging speed benchmark, revealing which phones genuinely refuel fastest in realistic, time-limited charging scenarios rather than just on paper specs.
The Fastest Charging Phones: iPhone 17 Pro and Galaxy S26 Ultra
From this phone charging speed test, two devices rose above the rest and earned CNET Lab Awards for charging performance. Apple’s iPhone 17 Pro emerged as the overall fastest charging phone when wired and wireless scores were combined. Its advantage is not just raw wattage, but also its smaller 4,252mAh battery, which simply takes less time to fill than rivals with 5,000mAh-class packs. Samsung’s Galaxy S26 Ultra, meanwhile, claimed the title for fastest wired charging thanks to its new 60-watt capability. While it carries a larger battery, that higher ceiling lets it push significant power in a short burst, ideal for quick top‑ups. Together, these results show that the fastest charging phones are not necessarily those with the most extreme wattage figures, but those that balance battery size, efficiency and charging hardware in a smart, system-level design.
Why Chinese Phones Still Outpace Western Flagships on Charging
Even with CNET’s awards going to Apple and Samsung models, phones designed by Chinese brands continue to lead the quick charge comparison in raw speed. Devices like the OnePlus 15 demonstrate what’s technically possible: the Western variant supports up to 100W wired and 50W wireless charging, while the unrestricted version reaches 120W. Paired with a massive 7,300mAh battery, that setup can still deliver a 0–50% top‑up in about 20 minutes and a full charge in under an hour. Other brands such as Huawei, Oppo, Honor and Xiaomi similarly push 100W‑plus systems and adopt split battery packs or advanced chemistries. In contrast, many mainstream Western flagships cap charging far lower, even as they improve in other areas like camera quality or software. The result is a stark split: customers who look beyond the dominant brands discover far more aggressive charging options, especially on imported or non‑carrier devices.
Silicon-Carbon Batteries and the Trade-Offs Behind Speed
CNET’s testing highlights that charging speed is more than just a charger rating—it’s tightly linked to battery design. Some phones use split batteries, effectively two smaller packs charged in parallel to reduce heat and boost speed. Others adopt silicon-carbon cells, a newer chemistry that allows higher capacity and faster top‑ups, though it remains limited in availability and often tied to specific high-end models. These technologies explain why some phones, especially from Chinese manufacturers, can handle extreme wattages without immediately compromising safety. Yet even with these advances, factors like thermal management, long-term battery health, and software optimization all shape real-world results. A smaller, efficient battery such as the iPhone 17 Pro’s can still compete with higher-watt rivals by needing less energy to reach a usable charge. In the lab, that means a device with moderate wattage can match or beat a more powerful competitor if its overall system is optimized.
Why Apple, Google and Samsung Don’t Chase Ultra-Fast Charging
Despite clear technical feasibility, Apple, Google and Samsung have been conservative about pushing 100W‑plus charging into their mainstream phones. Market dynamics play a major role. In regions where iPhone and Galaxy devices dominate, brand loyalty is strong and consumers often prioritize battery life, ecosystem features and reliability over headline wattage. That reduces pressure on incumbents to adopt extreme charging speeds. There are also engineering and risk considerations: higher wattage means more heat, more complex battery management and potentially faster long-term battery wear if not carefully controlled. For companies that ship at massive scale, a single charging-related issue can be costly and damaging. Meanwhile, in more competitive Android‑focused markets, charging speed has become a differentiator and a marketing hook, motivating local brands to experiment aggressively. Until customer expectations shift dramatically, Western flagships are likely to continue favoring balanced, safer charging profiles over the most extreme figures on the spec sheet.