Why does the power only go up to 7.5W for the iPhone 12 / 13 / 14 range? It seems much lower compared to Apple's own charger.
This is due to Apple regulations that limit the power for third party magnetic chargers and cables. However, from our internal testing, we actually found that Apple’s own 15W MagSafe Charger only holds 15W power for a few minutes, then decreases