For a while, I've been using a USB-C female to USB-A male adapter to connect my MagSafe charger to various old-school USB wall chargers. Somewhat surprisingly,

For a while, I've been using a USB-C female to USB-A male adapter to connect my MagSafe charger to various old-school USB wall chargers. Somewhat surprisingly, this works perfectly; the charging speed is probably slower but I haven't noticed. That said, I'm guessing this violates some specification or other. Ah, well, no explosions yet.