Which wall charger is better? What's the difference? Same specs, different price.

◤Products used in this video◢ (includes affiliate links) Anker 511 Charger (Nano 3, 30W) Amazon amzn.to/4dbbsSU UGREEN Nexode Mini 30W PD Amazon amzn.to/4chlpN8 Aliexpress s.click.aliexpress.com/e/_De5g4xN Thermal camera amzn.to/4bosjBf ◤Contents◢ 00:00 I'll Compare USB Chargers that Look Almost the Same 00:34 Introduction of Chargers 01:36 Specifications of Chargers 02:51 Measure Conversion Efficiency 04:05 Measure Temperature During Charging 05:37 Measure Switching Frequency 06:27 Disassemble Chargers to Look Inside 07:33 Power Semiconductors Used in Chargers 09:00 Insulation Design 11:45 Summary ■Business inquiries twitter.com/ichiken_make