Price-to-performance analysis, certification checks, and long-term cost of ownership
Understand what causes wireless charging heat, how it impacts efficiency and battery life, and which certifications actually matter. Apply a simple checklist and cost-per-sustained-watt metric to pick a safe, stable charger without overpaying.
See which wireless chargers maintain sustained power through 8-hour workdays, verified by thermal and wattage tests. Learn how to spot Qi EPP certification, account for included power bricks, and calculate cost per sustained watt to spend smarter.
A data-backed comparison of MagSafe, Qi2, and Qi clarifies what actually matters - sustained watts, magnetic alignment, heat, and battery health - plus cost and certification checks with clear picks by setup. Bottom line: Qi2 is the best choice for iPhone 15, while MagSafe mainly benefits older models through alignment.
Real-world tests of 17 chargers reveal which Qi2 options actually stay cool and fast in StandBy. Use the simple checklist - Qi2 logo, 20W+ PD adapter, under 35°C - to avoid throttling, protect battery life, and spend wisely.
Lab tests on 17 Samsung wireless chargers show most “15W” pads throttle under heat, while only a few deliver sustained speed without raising battery temps. Get two clear buy picks (Samsung-only and mixed-device) and a quick checklist to spot real performance and skip the hype tax.
