Top critical review
My controllers were part of the defective batch
Reviewed in the United States on August 24, 2017
Be careful when buying these controllers. If they are from an older manufacturing date that is closer to when the system launched, the left controller will most likely be defective and have a very low range. It almost seemed a little sneaky when I bought these controllers discounted off of Amazon and they ended up being in the defective batch. Not sure if that was the reason why they were discounted in the first place, but it would have been nice to know that I was at risk of buying a controller that barely worked from 8 feet away.
Luckily, if you do end up with a defective left joycon, you can send it into Nintendo for repair. They will try to argue that you are using it wrong when you troubleshoot it over the phone, but there is a piece of conductive foam that they will add that increases the range of the controller significantly, without needing to be in a clear "line of sight" of the Switch console.