Understanding the thermal ceiling in portable power

The Anker MagGo Power Bank 2 Pro employs a micro-centrifugal fan, dual airflow channels, a three-layer graphene heat-spreading sheet, and a temperature-aware control algorithm to keep its surface below 36 °C during Qi 2.2 magnetic wireless charging. This active cooling maintains a sustained 25 W output, charging an iPhone 17 Pro to 50% in 25 minutes, while comparable magnetic power banks exceed 45 °C within 20 minutes and reduce charging rates.