I have bought a 30w usb-c power adapter, is it compatible to my iphone 7plus?

Hi wenskyruel, Yes, it's is compatible (although it is not listed). My understanding is that you can use your 30 watt USB-C power adapter with your iPhone. The fast-charging feature is not supported until iPhone 8, but you can use it with iPhone 7+ (it just won't work quite as fast, but YMMV speed-wise. The phone will draw what it needs.

-- JDee

Definitely! The 5 watt is, how shall I say, fairly useless (and I say this with love, honestly). The devices are just so capable, have such sizable batteries now and need filling often, because they are used so often and for so much, that 5W just doesn't fly. The iPhone 11 Pro Max that I'm using these days (I had the 7+, btw, and loved it), the 11came with an 18 watt USB-C to lightning. But, then again, according to a lot of the tech blogs, including one of the testing sites that I linked to earlier, the sweet spot in terms of a value to speed comparison, at least for the 7+ seems to be the 12W that came with a lot of iPads at the time the 7 was first released. But you got a 30W for the same reason I upgraded my charger -- we like and appreciate fast. I'm willing to pay a premium for speed. That's a total personal preference, judgment call. The 30 watt that you picked up is, for example, is what comes with the MacBook Air 2020 that I just picked up; and it's great and works well with the grounded extension cable when the duck-head is swapped out.

Rest easy! Have a great weekend, and happy charging (and, even better, happy depleting that charge by using!)

-- JDee.