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%