Benchmarking Portable Solar Phone Charging Kits for Outdoor Field Use

Abstract

The authors evaluate three compact solar charging kits designed for student use in outdoor campus areas. Over twelve clear-sky sessions, they compared charging rate, thermal behavior, and conversion efficiency under controlled load conditions. The best-performing kit delivered 18% higher average charging power than the baseline product and maintained safer operating temperatures through passive heat sinking. The paper provides practical recommendations for schools exploring resilient, low-cost renewable charging infrastructure.