I bought a few of these from the OP and the quality is nice. I also bought one of the DIY charger and use hot glue like the OP suggested and it works. However, both of these charger are the slow charge kind. So if you want to charge your cell phone faster, I suggested a different DIY charger.
But the quality of the repo Nesica panel made by the OP is great though. At least now I can use that spot where the Nesica reader is for something useful.