I'd be concerned that putting a Polyswitch-type device on each cell might mess up the charge balance and cause more problems than it solves. The commercial battery packs I've seen videos of - and the ones built by people who seem to really know their stuff - don't have them. Also, these devices add an amount of series resistance which may not be trivial in the context of peak currents delivered by an Li-Ion cell.

Part of that "doing it right" involves using cells that were verifiably made by reputable manufacturers. Some of the reasons for that - along with some other potentially helpful links - can be found here: https://hackaday.com/2025/09/2...

Additionally, study and understand best tab-welding practices. Too much heat, and/or welds that go too deep, can damage the batteries; but the damage may not become apparent for quite some time. And that 'becoming apparent' can be quite spectacular. OTOH, insufficiently deep welds can form hot spots in use or during charging - the dangers there are obvious.

I also recommend starting with smaller cells and a lower cell count, just to gain experience and to have something to evaluate. If such a pack DOES go off, it's both less likely to cause serious damage, and easier to remove to open air. Good things to have on hand are a bucket or two of sand, a steel shovel, goggles or a face shield, and maybe some welder's gloves. Plus a fire extinguisher - not for the pack itself, but for whatever the pack might set on fire if things go wrong.

This isn't the voice of direct experience, but rather a distillation of materials read, videos watched, and decades of experience with a wide variety of electrical and electronic devices. Do thorough research before proceeding, and be serious about safety. But don't let the risks discourage you; plenty of hobbyists deal with Li-Ion packs on a regular basis.

I'm not saying that the Ferrari idea isn't cool and creative; and I can imagine that it probably IS "emotionally engaging". But they ARE pretending it's something it's not - they're pretending that the sounds are inherently louder than they actually are.

If they didn't have to pretend, then the sounds wouldn't have to be "amplified to create what the company describes as a natural, evolving tone that reflects how the car is being driven". If you suddenly stop hearing an engine or drive-train sound in an ICE car, then something more serious than a blown audio chip is probably wrong.

[citation needed]

Windows 11 is causing me grief daily, and the UI is provably worse than it was in 10.

People don't appreciate how aerodynamic cars can be at this time, and have been since the late eighties. My 1989 240SX fastback had an 0.21 Cd. Yeah, the Aptera has a lot less frontal area, but it also has a bunch of stupid shapes sticking out that a car doesn't have to have.

Same for three wheeled car projects. The only time they ever made sense was for war-ravaged Europe trying to get back on its feet and saving scarce materials and manufacturing time by making simpler 3-wheeled microcars with fewer complex parts. It seems like a good idea at first glance, you reduce rolling resistance, you could potentially reduce wind resistance, you save money on parts. But the driving experience is shit; you can't corner as hard so your ability to avoid obstacles is reduced, the three tracks mean you drive through more potholes and hit more other obstacles (all kinds of shit falls off vehicles) that you could have dodged if you had two tracks, replacement of the third tire is more complicated than on a normal four-wheeled vehicle, you can only tow them on a rollback and not with a wrecker, etc.

Three-wheeled vehicles are shit, and any business plan which involves selling them in volume is stupid.

No, only the ones involving determining eligibility for social services that should be replaced by UBI.

Since when did we enshrine unsustainability?

Since when did we celebrate life's purpose being enhancing shareholder value?

You have nothing to lose but the boot you're deep throating.

If the workplace policies and procedures don't prevent certain employees making it toxic for everyone, then it's the workplace, same as how a business which cannot pay a living wage doesn't deserve to exist because it's an unsustainable business model.

Gee, that sure does sound familiar. I wonder where I heard that recently?

I've been compiling software for Linux since I first started running it 1994 and it has never been more complicated than it is today. Dependency changes five levels deep or more and you get compilation errors at multiple levels. Your dismissiveness is unwarranted and makes you look ignorant.

Unless you are referring to "toxicity" in the sense of asbestos or leaded pipes, it's always going to be an employee.

Some of us set smaller limits because we have 64GB in our system and don't want 32GB of tmp if something goes bananas.

I gave you the steps if you want to replicate my experiment. Or, you can ask anyone who has used a computer within the past 18 months.

If they want to make their machine noisy they should use straight cut gears and omit the sound deadening asphalt. Then it will be loud as shit all the time, without having to pipe in any fake noise bullshit.

Quiet is one of the best things about EVs. Being able to hear the other noises the car makes is actually useful, unlike this crap.