Wireless charging is less efficient than wired charging and generates more heat, which can degrade smartphone battery capacity over time. However, the article recommends a balanced approach that combines both methods: using wireless charging for convenient top-ups throughout the day whilst reserving wired charging for overnight power sessions to optimise battery longevity.

Qi2-certified wireless chargers are approximately 30 per cent less efficient than wired alternatives, with wasted energy converting to heat that can reduce battery capacity by up to 12 per cent over two years, or 25 per cent in hot environments. Apple's iPhone 18 Pro reaches 50 per cent charge in 15 minutes via wired connection but requires 30 minutes wirelessly. Despite these technical drawbacks, 88 per cent of smartphone users report satisfaction with Qi2 charging devices, and modern phones include built-in power management systems that safely regulate charging and prevent overheating.