Peter Jakobs ⛵ / is on Nostr

digital Aboriginal,
Aphoristiker in Spe,
Archetyp des weisen Narren,
open by default.
Desillusionist.
It ain't me.
Not cool.
Meeremit
Haere tū atu, hoki tū mai
prosopagnosisch
Gegner schwarzer Schwäne
Solltest Du mich nicht kennen und das überwältigende Gefühl haben, mir ungefragt etwas erklären zu müssen, gehe bitte davon aus, dass ich es schon weiß

Blog (activity pub): https://sv-antares.de/author/pjakobs/
Threema: https://threema.id/5M5BBHXM
Telegram: Peter Jakobs ⛵ (npub13v6…9x6q)
Blog: http://sv-antares.de

Last Notes

2024-07-28 21:22:34

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well, as said, these are end user prices. When I buy as many as 32 cells, the price goes down to 75€, including 19%VAT.
When you're buying a the volume discussed here, I guess you can get below 50€ per kWh, getting you to roughly 1.1-1.3ct per kWh.
I agree, it's not totally negligible (I was off by an order of magnitude first), but it might still be an option

2024-07-28 20:15:25

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what is interesting: given the roughly 1kWh per cell and the life expectancy of about 4000 cycles until it has degraded to about 80%, one cell can be used to transport about 3.5MWh. Given a cell price of about 100€ (which is an end customer price for a single cell), the cost for the cells is negligible on this idea. That is surprising, I think.

2024-07-28 19:02:57

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prismatic LiFePO4 cells weigh about 5.5kg per kWh capacity, but since such a wagon would require framing to secure the cells, wiring to connect them and probably BMS(s) to maintain them, I guess the true energy density is somewhere between this and your 10kg per kWh. That's still a hefty wagon.
The volumetric density is about 0.002m³ per kWh, which means that 30MWh take up about 60m³ - so volume wise, it would probably fit.

2024-06-16 17:10:38

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not to be known as the guy who doesn't know the original: Charles Trenet's version is an icon and I had shared that with somebody which is why I stumbled into this beautiful version.
And yes, retiring by the sea is a plan. I'm still trying to figure out what sea. South pacific would be my preference, Napier, to be precise.

2024-06-11 16:33:19

puh, das RPi CM4 mit 8GB RAM und 16GB Flash, WLAN und BT kostet 96,90€ :o
Das Teil ist was, vier Jahre alt?

2024-06-07 18:17:30

Sehr dumme Menschen wären klüger, wenn sie den Mund halten würden

2024-05-23 18:41:28

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selbst wenn Herr Merz die Physik verstünde, würde er zündeln, weil die Physik aus seiner Sicht einen grünen Bias hat. Die Grünen aber sind sein politischer Hauptgegner.

2024-05-01 21:29:48

Find ich klasse!
Zumindest mal im Mai nicht mähen
https://www.youtube.com/watch?v=rBL_6abiiAg

2024-01-14 08:34:26

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I look at it slightly different - since all my work is in open source, I consider myself as a temporary custodian of a project (whether it's one I have started or taken from other beginnings) and thus a good part of my creativity is spent on expressing my ideas such that future custodians can work with them, build on them and don't think I was a crazy madman taking to code with a pickaxe and superglue @npub17v6…wdv9 @npub1n4n…6ax6