GoKawiilPortable chargers hit thermal limits despite wattage claims, industry pivots to active cooling
Portable power devices often list peak wattage on the box, but real-world performance drops as heat builds up during charging—especially in magnetic wireless chargers, where the induction coils sit in direct contact with the phone. For years manufacturers have relied on passive materials like graphite sheets and heat spreaders to manage that heat, but these can only slow warming, not stop it, once a compact enclosure hits its thermal ceiling.