ESR Charger Kept Phones Coolest in 30-Minute Test as Wired Charging Raised Heat Most
Updated
Updated · ZDNet · Jul 7
ESR Charger Kept Phones Coolest in 30-Minute Test as Wired Charging Raised Heat Most
3 articles · Updated · ZDNet · Jul 7
Summary
Three wireless chargers tested over 30 minutes kept phones cooler than a wired iPhone charge, with ESR posting the smallest temperature rises on both devices.
ESR's fan-cooled station raised temperatures by 13.1°F on the iPhone Air and 14.8°F on the Pixel 10, beating Mophie and Ugreen in the side-by-side test.
Mophie's passive-cooling stand kept its pad and the iPhone cooler than some rivals, while Ugreen's temperature-monitoring charger ran cooler than Mophie on the Pixel 10 and charging pad.
A wired iPhone Air charge lifted battery temperature 17.1°F and the camera island 23.9°F while adding 44% battery, making it the hottest result in the comparison.
The test suggests cooling method mattered less than expected for battery heat, with device compatibility, extra charging features and portability emerging as bigger differentiators.