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Building a 2.5kWh battery from disposable vapes to power my workshop [video]

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Re: Building a 2.5kWh battery from disposable vapes to power my workshop [video]

#101

Post by huijzer »

Aachen wrote: post #53
huijzer wrote: post #48

Earlier quoted context omitted.

Well luckily according to Bill Gates the climate is not really an issue anymore [1]: > There’s a doomsday view of climate change that goes like this: > In a few decades, cataclysmic climate change will decimate civilization. The evidence is all around us—just look at all the heat waves and storms caused by rising global temperatures. Nothing matters more than limiting the rise in temperature. > Fortunately for all of…

Please also cite where he allegedly said that it's a doomsday event before you put up the strawman and debunk it with "look even this guy changed his mind" Edit: The only concrete thing I've found in trying to seek through your tedious video links for 10 minutes (idk why I'm spending my time on this but here we are) is the claim that, instead of living healthily, we'd be "constantly dealing with the human and financi…

Sorry, I didn’t double check indeed. I posted the wrong TED talk from him, see [1] at 4:21. There he says we need to limit climate change by limiting population growth. I think this is quite a hypocritical stance from someone who flies private jet all year.

[1]: https://youtu.be/JaF-fq2Zn7I

Re: Building a 2.5kWh battery from disposable vapes to power my workshop [video]

#102

Post by jogu »

Neywiny wrote: post #69
PeaceTed wrote: post #65

Earlier quoted context omitted.

Congratulations, welcome to the dev team of Collapse OS. https://collapseos.org/ Now they are more focused on supply chain break down but your scenario would also be valid.

When I think of what's out there I think of cheapy ARMs, maybe STM32 knock offs. Honestly the F103C8T6 is so prolific that's probably a solid chunk of all processors in existence. And then things like ESP32s. So to not see ARM or Tenscillica on there is a bit weird. But maybe I'm reading too much into it and it's more of a thought experiment

My first time seeing Collapse OS as well, but I'm guessing the decision is based in attempting to contain complexity.

Seems like the author has a related projected Dusk OS that is more portable:

https://duskos.org/

Re: Building a 2.5kWh battery from disposable vapes to power my workshop [video]

#103

Post by gruturo »

jbl0ndie wrote: post #94
oulipo2 wrote: post #27

Earlier quoted context omitted.

Shameless plug: we're building a repairable e-bike battery where you can use your own cells at https://infinite-battery.com We worked on a very sturdy casing, with some specific features to release pressure and limit the fire event propagating cell to cell, you can check it here https://www.youtube.com/watch?v=v0NXXfCA2CY

I'm confused why your value proposition is that you can replace individual cells but your website also says it's recommended to replace all cells at once. Isn't that the same as the current situation where we have to buy a new battery assembly rather than replace the failed cells? > When an E-bike battery fails, 90% of the time, its just 1 or 2 cells that are dead inside or a single electronic component. But since tr…

You should definitely replace all cells together - a new cell will have a different capacity and could "charge" an adjacent older cell to rebalance, causing a fire (but a good BMS won't allow that - on the other hand you'll be limited by your weakest cells despite having put some new ones in)

For me the value proposition would be to avoid what happened with my previous ebike: after 3 years I wanted a new battery as the old one was on its last legs, and it wasn't produced anymore. Or what's happening with my current ebike: to avoid the same story with the battery, I am thinking of buying an extra one now while it's still produced, and it's outrageously expensive (550EUR for roughly 500Wh, which is about 7..10x the price of the cells if you are a careful buyer).

(You can fit a new battery to any bike with (sometimes lots of) extra work, but esp. my previous one had a weird solution where it slid into a rail above the rear wheel and it would have been a PITA to reengineer.)

So yeah if their thing works I'd consider a bike using it, on economical grounds mainly.

Re: Building a 2.5kWh battery from disposable vapes to power my workshop [video]

#104

Post by johanvts »

xarope wrote: post #78
crmd wrote: post #28

After all networked smartphones and computers were placed under control of the regime, resistance hackers relied on microcontrollers harvested from ordinary household devices like smart lamps and vape pens to slowly rebuild the covert but resilient mesh internetwork that became known as FreeNet.

Someone write a novel please. Not sure who will be more appropriate: Stross (more fun?), Stephenson (more of a slog through the first 600 pages, then an abrupt 180 and frenetic action in the last 100 with newly introduced, yet game-changing characters?).

Fits well with William Gibson. The Turing-police will visit anybody who consumes more than 5 yearly vapes.

Re: Building a 2.5kWh battery from disposable vapes to power my workshop [video]

#105

Post by johanvts »

hamdingers wrote: post #19
viraptor wrote: post #3

Just curious: if you wanted to do something like that, but prevent a... thermal event, how would you protect an experimental battery realistically? Build a brick enclosure? A fire safe?

If you have the space for it, just put it outdoors 5' from anything flammable and you're good to go. This is not a hobby for folks in apartments unfortunately. I've had one of my DIY ebike batteries short and fail spectacularly at near full charge and was able to push it with a broom out of the garage into the driveway before any damage was done. Now I have a bench with wheels that I can take into the driveway for in…

Sounds like it’s also not a hobby for people with neighbors.

Re: Building a 2.5kWh battery from disposable vapes to power my workshop [video]

#106

Post by shadyKeystrokes »

xarope wrote: post #78
crmd wrote: post #28

After all networked smartphones and computers were placed under control of the regime, resistance hackers relied on microcontrollers harvested from ordinary household devices like smart lamps and vape pens to slowly rebuild the covert but resilient mesh internetwork that became known as FreeNet.

Someone write a novel please. Not sure who will be more appropriate: Stross (more fun?), Stephenson (more of a slog through the first 600 pages, then an abrupt 180 and frenetic action in the last 100 with newly introduced, yet game-changing characters?).

Then a end midsentence and a black page.

https://en.wikipedia.org/wiki/The_Peace_War closest you can get to vape insurgency

Re: Building a 2.5kWh battery from disposable vapes to power my workshop [video]

#107

Post by [deleted] »

knowitnone3 wrote: post #18
louwrentius wrote: post #6

Earlier quoted context omitted.

A runaway NMC battery is notoriously difficult to extinguish, so the best thing to do is to not do it and investigate LFP prismatic cells instead. Many people building home storage batteries use a shed a few meters away from their home.

what's a NMC battery?

[deleted]

Re: Building a 2.5kWh battery from disposable vapes to power my workshop [video]

#109

Post by oulipo2 »

jbl0ndie wrote: post #94
oulipo2 wrote: post #27

Earlier quoted context omitted.

Shameless plug: we're building a repairable e-bike battery where you can use your own cells at https://infinite-battery.com We worked on a very sturdy casing, with some specific features to release pressure and limit the fire event propagating cell to cell, you can check it here https://www.youtube.com/watch?v=v0NXXfCA2CY

I'm confused why your value proposition is that you can replace individual cells but your website also says it's recommended to replace all cells at once. Isn't that the same as the current situation where we have to buy a new battery assembly rather than replace the failed cells? > When an E-bike battery fails, 90% of the time, its just 1 or 2 cells that are dead inside or a single electronic component. But since tr…

Thanks for your message!

So the value prop are multiple things:

- you can indeed change the cells! When the industry matures, we might have a "second-life cell cycling" path where old cells are re-tested and matched so you could switch individual cells, but for now, as those "matched cells" aren't widely available we recommend you switch everything to new cells (this would cost an end-user about $50 rather than buying a new battery for $200/$300)

- our battery is also very high quality (passes all certifications, waterproof, fireproof, connected, with safety alerts)

- even if you need to change all the cells sometimes, getting back "pristine cells" rather than "damaged, welded and unwelded cells" will allow for multiple things: putting them in a second-life cycle for eg. energy storage batteries, and even better recycling (since you can get cells out of the casing, the recycling process is even more efficient)

- now the cells are perhaps 1/3rd the cost of a battery, so all things being equal, you'd rather be able to change all cells than throw in the trash the old battery

- we also have seen some batteries fail because of broken electronics, etc, which are just $30 to replace, and our battery makes it extremely simple to do so

Re: Building a 2.5kWh battery from disposable vapes to power my workshop [video]

#110

Post by oulipo2 »

gruturo wrote: post #103
jbl0ndie wrote: post #94

Earlier quoted context omitted.

I'm confused why your value proposition is that you can replace individual cells but your website also says it's recommended to replace all cells at once. Isn't that the same as the current situation where we have to buy a new battery assembly rather than replace the failed cells? > When an E-bike battery fails, 90% of the time, its just 1 or 2 cells that are dead inside or a single electronic component. But since tr…

You should definitely replace all cells together - a new cell will have a different capacity and could "charge" an adjacent older cell to rebalance, causing a fire (but a good BMS won't allow that - on the other hand you'll be limited by your weakest cells despite having put some new ones in) For me the value proposition would be to avoid what happened with my previous ebike: after 3 years I wanted a new battery as t…

Exactly! That's precisely why we designed the battery, to let people be in control of their own stuff!

Our batteries have now be running for close to 3 years on shared mobility ebikes, so they are well-tested indeed! If you want more infos, send us an email at contact@gouach.com :)

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