I use a nitecore 2 bay charger, not sure of the model. I have used an older nitecore 4 bay, and 2 bay charger for 4+ years in the past. I never had any problems with any of these chargers.
Electonics wear out people. They use components that have a limited lifespan, usually what fails are the electrolytic capacitors, similar to common failiures in flat screen televisions. Some components don't last, and some are designed to fail.
As long as a
device perform the functions it is designed for and prevents potentially hazardous failures with the safeties in its design specifications for its expected lifespan, it is a good product. If it fails, replace it. If it is designed without the necessary safeties, don't buy it.
Pay attention to whether it is performing appropriately. Buy a multimeter and check it's output over time, as well as the
batteries resting voltage after a charge. These are basic operating principles when dealing with electronics and
batteries (aka. Electrochemical storage devices).
Advertising is not to be trusted. The main purpose of advertising is to sell a product. Advertising creates an interest in what it is trying to sell. Do some in-depth study on chargers, and specifically, on the circuits and manufacture of the circuitry used for producing your charger.
If you're not into that, that's ok. Knowing how and why something fails is very interesting to me. I hope you engage these questions and find interest in this subject.
Knowing what is the beginning, asking why is the next step, and understanding how is one of the last, most important steps in creating a better product (not counting all the b.s. involved in getting a product to market).
Sorry for the rant, we seem to be living close to the age of idiocracy. Peace, I'm out.
