Inside the Battery Revolution: How Your Smartphone Will Charge Faster, Last Longer, and Save the Planet
Most smartphone batteries retain about 80% of their capacity after 500 complete charge cycles (roughly 1.5–2 years). Xiaomi demonstrated 210W HyperCharge that can fill a 4,000 mAh battery in about 8 minutes. Qi2 was announced in 2023 and supports up to 15W wireless charging, with the iPhone 15 (late 2024) first to officially support it. In 2024 Apple switched the…