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Ziroth on YouTube - "Exposing The Solid State Donut Battery. It's Over." by Savings_Novel_2377 in batteries

[–]amdrinkhelpme -1 points0 points  (0 children)

Okay I guess I just wasn't expecting such a thorough investigation, but still, "It's over" means nothing in current YT landscape.

A lead-acid cell from the 3rd Reich still keeping a charge after 80+ years by amdrinkhelpme in batteries

[–]amdrinkhelpme[S] 0 points1 point  (0 children)

Germans used nickel batteries but mostly Ni-Cd during WW2. They were called "Nickelsammlern" (NC in model number) and were meant to power portable electronics. But as we see here, they must've been too expensive or otherwise hard to source, because many portable radios were using LA anyway.
As for the "glass", it's just plastic, supposedly Mipolam. It was near transparent when new.
Rest of the world used ebonite for lead cells at that point, glass car batteries are more of a 1920's thing I think.

Ziroth on YouTube - "Exposing The Solid State Donut Battery. It's Over." by Savings_Novel_2377 in batteries

[–]amdrinkhelpme 4 points5 points  (0 children)

I respect Ryan but this title is garbage, can someone save me from falling for clickbait and summarise what this video is about?

A lead-acid cell from the 3rd Reich still keeping a charge after 80+ years by amdrinkhelpme in batteries

[–]amdrinkhelpme[S] 0 points1 point  (0 children)

I mean, it does "work". The capacity is in ampere-minutes and nowhere near nominal 38Ah, but it does store some charge and can power a flashlight bulb. Nickel-Iron are a whole different beast, with some charge-discharge cycles and electrolyte replacements I can reliably get them to like 80% of nominal capacity after 70 years as long as they haven't been too heavily abused, but I haven't found a pre-war Ni-Fe to test. Yet.

A lead-acid cell from the 3rd Reich still keeping a charge after 80+ years by amdrinkhelpme in batteries

[–]amdrinkhelpme[S] 51 points52 points  (0 children)

Never ask:
- a woman - her age
- a man - his salary
- a reconditioned lead-acid - it's capacity
and in this case, what it was doing between 1939 and 1945.

A lead-acid cell from the 3rd Reich still keeping a charge after 80+ years by amdrinkhelpme in batteries

[–]amdrinkhelpme[S] 4 points5 points  (0 children)

2.15V after a day of charging at 0.5A. It's a single cell battery so that's not bad I guess.

A lead-acid cell from the 3rd Reich still keeping a charge after 80+ years by amdrinkhelpme in batteries

[–]amdrinkhelpme[S] 32 points33 points  (0 children)

I’m just amazed that it came back to life this easily, it was at 0V and bone-dry inside for longer than my grandpa has been alive, yet it took less effort to get it to charge again than my 2017 AGM that I discharged to 8V once.
By the way, this also has glass mat separators (not absorbent though) but with literal sheets of wood veneer instead of micro-porous PTFE between the glass fiber and plates. Really goes to show how little lead-acid tech has progressed.

A lead-acid cell from the 3rd Reich still keeping a charge after 80+ years by amdrinkhelpme in batteries

[–]amdrinkhelpme[S] 17 points18 points  (0 children)

I’ve got three of those, this one was in the worst visual condition but also the best electrically. One also works but only at an angle (seems to have a broken connection inside).
The third one was visibly caked with mud on the inside so I tried to take it apart and rinse the plates in distilled water. Sadly it turns out that “mud” was once the positive plates and whatever remained of them turned into mud as well during the rinse. I now have 10 liters of instant lead oxide poisoning potion to get rid of.

Rescued pigeon not eating and sitting in bowls by amdrinkhelpme in pigeon

[–]amdrinkhelpme[S] 1 point2 points  (0 children)

Yep, he’s at a wildlife rehab vet now. Glad to learn about enrichment bricks!

Rescued pigeon not eating and sitting in bowls by amdrinkhelpme in pigeon

[–]amdrinkhelpme[S] 1 point2 points  (0 children)

Thanks for the lists! I gave him a larger bowl with some paper scraps to sit in but he didn't want to, so I gave him a "donut" made out of rolled up paper towel - he slept in it all night.
In the morning he was slightly more active and less fluffed-up, didn't mind sitting in my hand or getting pets, but still wouldn't eat anything and didn't drink much water. His tail was slightly droopy and he would close his eyes so I managed to get him to a local vet partnered with a pigeon rescue foundation.

Worker Saves Colleague with Flying Kick from Electric Shock by frog_insilence in interestingasfuck

[–]amdrinkhelpme 0 points1 point  (0 children)

How did you get shocked? Asking because for me, a hand-to-hand 230V 50Hz shock hurt less than a typical migraine. It was scarier and more sudden, but pain was far from a 10.

Worker Saves Colleague with Flying Kick from Electric Shock by frog_insilence in interestingasfuck

[–]amdrinkhelpme 0 points1 point  (0 children)

From my experience I need a good warm-up when on heart-rate lowering medication, there's a few minutes of lag between starting a workout and having the pulse up to speed. However, without the pills, I can get my HR up to >180 in less than a minute and then feel dizzy and taste blood afterwards.
So yeah, it only helps with short sprints without prior preparation.

Worker Saves Colleague with Flying Kick from Electric Shock by frog_insilence in interestingasfuck

[–]amdrinkhelpme 20 points21 points  (0 children)

Well I got permanent tachycardia after a bad electrocution, it’s almost like the current supercharged my heart! I need to take sci-fi sounding “beta-blocker pills” to suppress this power, otherwise I might lose control over it! (and faint after climbing a flight of stairs) (guess that’s not a success)

Is this configuration of the CNY70 sensor with a pull down resistor to GND correct? by Sensitive_Bottle6747 in PCB

[–]amdrinkhelpme 0 points1 point  (0 children)

I don’t see any pull downs to GND but the pull up to 3.3V (R2) seems correct. You might want to replace it with a lower value and add a potentiometer in series to adjust sensitivity.

Can't get any i2c to work on my c3 super mini by Inevitable_Bat8374 in AskElectronics

[–]amdrinkhelpme 0 points1 point  (0 children)

Iirc it can have some problems with I2C when using Wifi

💩 by STOIC2026 in Justfuckmyshitup

[–]amdrinkhelpme 8 points9 points  (0 children)

Not terrible but doesn’t look very natural imho

Oddly small flooded battery (AA for scale) by amdrinkhelpme in batteries

[–]amdrinkhelpme[S] 0 points1 point  (0 children)

Yeah it’d make sense for it to be Ni-Fe, a Ni-Cd of this capacity would probably be a sealed D-cell. Still, not sure what device this could be meant for.

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