I wouldn't worry too much about replacement batteries. They are just standard sealed lead acid batteries that you can replace with generics without paying the high OEM prices. The ones I've replaced are just a spacer between two batteries with a sticker holding it all together. I just took my bad ones to a local battery place, said I need replacements and then they recycled the old ones for me.

I do know that Cyberpower has some reports in the past of their UPSs being a fire hazard. Definitely caused me to go with APC when I bought one a couple years ago. https://www.tomshardware.com/news/cyberpower-upses-reportedly-pose-fire-hazard

That isn't really true though, any vampire currents or leaving it only partially charged can leave it in a state where it reaches the cutoff voltage when you aren't using it. Then self-discharge takes it under the limit of the charging circuit and the device never works again.

With a device that can run off AA or AAA cells, you can use NiMH (NiCd has zero place today) and remove the batteries when you are done and put them back in the pool of other cells you use. By the nature of Li-ion, as soon as that cell is made it has a limited lifetime until it no longer works just due to reactions that happen within the cell, which means any infrequently used item that might last for decades otherwise now has a lifetime of maybe 5-10 years.

I disgree. I have plenty of items around the house that I might only need a few times per year where a standard alkaline or NiMH cell is ideal because I can pop one in when I need it. If the Li-on cell discharges when I don't use it for a period of time then it may not charge anymore and the device is now garbage.

I desperately want to know what you were imagining might happen when you asked this question.

Logitech pissed me off years ago when they didn't honour a warranty because I bought a flawed product before they extended the warranty on them.

I have not even been tempted by their products because there are so many other peripheral manufacturers out there that put out great products.

I don't like this at all. All the force of typing going into bending the front edge of the laptop. I know from my Framework that holding it by the front corner causes enough deflection that the touchpad no longer can be clicked so even more force causes concerns about damage.

It really isn't faster though when you risk having some issue that requires help half the time.

Humble Bundle was cool when it was an occasional event focused on charity and indie devs. Once it became something that was going pretty much all the time it quickly lost any interest I had.

No, purple is a non spectral colour meaning it is incorrect to call it "a wavelength" but rather you say it is a perception of multiple wavelengths. Not that this is special, pretty much everything you see is a non-spectral colour.

Or the engineers have been given bad requirements and made the wrong product.

As someone that worked in a battery lab for a short period of time I agree. These are exactly the types of questions that need to be asked for any battery related technology article (not just China, other institutions around the world do this as well)