Gikfun Qi Wireless Charger PCBA Circuit Board Coil Wireless Charging Micro USB Port DIY EK1854

Installed it on my phone that I broke to retreat retrieve the data that was on it it worked fine unfortunately the screen on the phone was smashed so bad that the phone wasn't of use. Bought the product just to retrieve the information worked great for my purposes.

I purchased this charger to use in a phone mount I was making for my vehicle. It was very slim and fit very well inside my design.CAUTION: The alignment of the device you are charging is crucial. On my galaxy s20 ultra there was little margin for error with the alignment. It's just the nature of a small single coil charger like this one.It works great and I intend to buy a few more to make chargers for my other car and desk at work.

Read all the reviews here and thought I'd take a chance. Unfortunately, the unit I received has a very hard time staying connected to my Galaxy 8.Before I installed it into my home-made stand I placed the coil plate directly on the phone (to find out where the phone's charge plate is). I moved it around until the blue "charging" indicator lit. It was very sensitive to where it was placed, a mm or two away from optimal location and it would not "charge". Even when locating the charge plate correctly, the unit would start charging and then stop, then charge, then stop, etc. etc.I did get it to stay in the charge mode once, so I proceeded with the install.So, got the unit installed in my stand, placed the phone on the stand (the coils are touching the back of the phone) and moved the phone until the blue led lit. Again, did the same start and stop (the phone went crazy with the audio notifications!)Finally found the sweet spot. Left it overnight and found that for 10 hours of charging the battery only went up by 10% (53 to 63%).Did the same the next night and the phone had less charge than when it started! My wife told me it was an entertaining light show, with the blue LED dimming down, brightening and then doing it again.So, would I recommend this? NO.

UPDATE: Product seller sent me a replacement component. Several hours of use in and it seems to be much sturdier than the first one I received. The circuit board is a different design. I would guess a different production company was used for the second component. Changing my review from 1 to 3 stars.The product worked fairly well for about an hour. I knew from the reviews that product durability was a concern and that turned out to be true.Issues:1)The plate the coil sits on looks like a piece of sturdy metal, but it was very brittle and cracked when I attempted to install it into a frame.2) chip set will recognize a charging pad is nearby and connect to it, but will disconnect a few seconds later. It repeats this pattern a few times then stays disconnected but the charging light stays on.3) chip set gets quite warm while charging, could be part of what caused it to fail. It may require a cooling fan to keep from burning out, can't say for sure.It's too bad the transmitter failed, the chip set was easy to design a mount for and fit well into my project.I'd have to recommend against purchasing it, durability just isn't there.

Functionally, the charger works well. The circuit is exposed, so you can actually use it to study how a Qi transmitter works, use an oscilloscope to see how the inductor is switched.There should be a stiff flat plate in the package that is slightly wider than the ferrite sheet, otherwise it is inevitable that the ferrite sheet will break. Mine was broken through the middle. It matters very little in terms of electrical performance, but it’s so easy and cheap to fix, I hope the seller reads this and fixes the problem.Do not enclose the little circuit board, it will eventually overheat if you do.

The media could not be loaded. I bought this with the intention of sticking it to the phone holder in my car. It starts out with a small current draw, then increases to about an amp. It won’t be the fastest charger I have, but the convenience factor of making my preferred holder wireless……

The media could not be loaded. I got two of these to power up a tablet stand I made on the engraver. 1/8" walnut plywood with one of these on the back worked very well.

The Gikfun Qi charger matches the picture and description supplied. Specifically the measurements of the charging coil assembly is exactly as described, thus in my case fits as a replacement into another product.Overall the charging assembly (CCA and coil) does work, though I am not planning to use the circuit card.