Can I leave the charger plugged in to power even when I’m not using it?

yes, you can

Is this Qi certified?

yes, good product

How many coils does the prudent have?


I plan to buy one, but will the metal plate for car mounts prevent the phone from charging completely?

I think the charger doesn’t work with the magnetic mount. You have to remove it to charge.

Will this charge a new iPad that has enabled for QI charging ?

maybe not, you can check on their description.

It works fine. but sometimes the charger turns off, what's wrong with it?

I have not had that problem. Maybe try another cable.

Serves for Samsung galaxy J7

No, for the reason that it does not have wireless charging capabilities.

My iPhone 7 plus doesn't have qi built in. I am using an aftermarket receiver case. Will this still work?

not sure, you can have a try

I purchase this product about 5 months ago and it initially worked great, but recently stopped charging fast. Has anyone else had this problem?

Have you changed a thicker case or a different wall charger?

How can I know it is fully charged?

when the battery up to 100%