Author Topic: Ban of non-rechargeable batteries  (Read 13911 times)

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Offline GlennSprigg

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Re: Ban of non-rechargeable batteries
« Reply #75 on: July 04, 2020, 12:05:44 pm »
Any company, including 'Eveready' etc, can EASILY make normal 'disposable' batteries last
10 times longer!, but deliberately DONT due to simple economics for the company!!!   :box:

Find a way to do that and you'll be wealthy almost overnight. A tenfold increase in capacity of any battery technology would be a scientific breakthrough that would be front page news. A company that developed such a battery could patent the technology, charge 5 times as much and rake in billions.

Frankly I think you're just talking out your ass.

Hello there friend.   I'm actually well aware of what generally comes out of my 'ass'...
And it is not pretty... (Maybe yours is 'special'  ;D )   However, it has NO relevance to what I said.
For decades, in virtually every facet of technology, there was initial ignorance in technological advances.
And THAT'S ok mate... as 'we' have learnt a 'shit' (from ones ass) load since then. One FACT remains though, is
that companies/people have learnt to 'capitalize' on such 'inventions' considering minimal input!!
ONE of those, is the ability/technology regarding batteries, where it is a FACT that companies could produce
such batteries to last at LEAST 10X longer, but DON'T because it obviously goes against their business acumen
that will result in MASSIVE losses of sales, otherwise...

I pose 'my' ASS, against your 'assumed' knowledge any time.  Have a 'nice' day...  8)
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Offline GlennSprigg

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Re: Ban of non-rechargeable batteries
« Reply #76 on: July 04, 2020, 12:10:51 pm »
The 'problem' I have at times with 'AA' 'Rechargeables' is in the likes of some Cameras etc.
Rechargeables are typically 1.2v instead of 1.5v. So "Low Battery" comes on too early!!!  :-\
That's because the device is poorly designed and depending on the current draw, could be wasting as much as half the capacity of alkaline cells. A properly designed device should operated down to at least 1V per cell. I hate this kind of junk.

I think it depends what the original cct was designed for. I was talking about a lot of equipment designed
for 'AA' batteries, (ok, often old), that when powered with '1.2v' is quickly underpowered...
Diagonal of 1x1 square = Root-2. Ok.
Diagonal of 1x1x1 cube = Root-3 !!!  Beautiful !!
 

Offline Zero999

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Re: Ban of non-rechargeable batteries
« Reply #77 on: July 04, 2020, 01:24:45 pm »
The 'problem' I have at times with 'AA' 'Rechargeables' is in the likes of some Cameras etc.
Rechargeables are typically 1.2v instead of 1.5v. So "Low Battery" comes on too early!!!  :-\
That's because the device is poorly designed and depending on the current draw, could be wasting as much as half the capacity of alkaline cells. A properly designed device should operated down to at least 1V per cell. I hate this kind of junk.

I think it depends what the original cct was designed for. I was talking about a lot of equipment designed
for 'AA' batteries, (ok, often old), that when powered with '1.2v' is quickly underpowered...
What sort of device was it: high or low power drain?

I would expect a higher power drain load to work better down to lower voltages, than something with a very low current draw. Alkaline batteries typically have a relatively high impedance, compared to NiMH, so a 1.5V battery will quickly drop to 1.2V, with any significant load. If I remember rightly incandescent torches (flashlight)  used to use a slightly lower voltage rated lamp, than the battery voltage, so a two cell unit would typically have a bulb rated to 2.2V, rather than 3V.

Lower powered devices will probably do poorer on lower voltages, because the cell voltage should remain higher, at low current draws, but I still hope most will function down to 1.2V, with no problem.

I think there's a lot of badly designed products out there, built down to a price. I've seen LM78L05 regulators used in devices powered by 9V alkaline batteries, when a low-dropout regulator should have been used instead. Quite often this increases the cost of ownership, compared to spending a little more on the device itself.
 
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Offline james_s

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Re: Ban of non-rechargeable batteries
« Reply #78 on: July 04, 2020, 05:07:27 pm »
out wall clocks having AA, I'm slowly replacing them with my own PoE IoT (local network) clocks cause the standard quarts clocks are too inaccurate for my taste (they go off by 5 minutes every month, donno why so much deviation.

That's odd, do you have wide temperature swings in your house? I have a few different quartz clocks and they typically hold to far better than that, maybe a few minutes at most in a year.
 

Online SiliconWizard

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Re: Ban of non-rechargeable batteries
« Reply #79 on: July 04, 2020, 05:47:04 pm »
- Their shelf life is usually much longer. Corollary is, if you can find some that have been stored, even for a rather long time, they are immediately operational. Can be a life saver. Related fact is that rechargeable batteries are likely to be discharged at the very moment you need them. Especially true for less often used items.

That was true 25 years ago but times have changed. For more than a decade already almost all NiMH cells have been the low self discharge type, they come pre-charged and hold a substantial charge for years. I've left them in a seldom used flashlight for at least 3 years and they still had plenty of charge left. I've had brand new alkaline cells leak faster than modern NiMH cells self discharge.

https://en.wikipedia.org/wiki/Nickel–metal_hydride_battery

The low self-discharge type has been introduced in 2005, so that's 15 years ago, not 25. Those cells are pretty good indeed, although with a slighly lower capacity as a trade-off. But even to this day, not all NiMh batteries on the market are of LSD type, far from it (and the average joe is likely to buy non-LSD batteries, because those are cheaper and because they just don't know... or even just because they will tend to go for the highest capacities, which look attractive, which are likely NOT to be of LSD type.) As an example, a typical capacity for NiMh LSD AA batteries is 2500mAh, whereas you can find NiMh AA batteries up to 3000mAh, which are unlikely to be LSD IMHO.

Standard NiMh batteries OTOH still have a relatively high self-discharge rate.

I've never seen a decent-brand alkaline battery leak within a couple years. If from a major brand and stored properly, their shelf life is longer than 5 years usually, 10 years is not uncommon.

A corollary point, but not directly related to shelf life point I was also making is that, due to our habits and a bit of Murphy's law, random rechargeable batteries stored in a drawer are likely to be depleted when you actually need them (partly because of self-discharge, but even with LSD ones, just because you're likely to have stored them discharged unless you're very disciplined.) I for one have a few primary batteries in drawers (never used), but pretty much all secondary (rechargeable) batteries I have, I've used them at least once (I think storing brand-new rechargeable batteries for extended periods of time would be relatively unusual, compared to primary batteries.) So this point was not just about technology, but about the practical aspects.
« Last Edit: July 04, 2020, 05:49:12 pm by SiliconWizard »
 

Online SiliconWizard

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Re: Ban of non-rechargeable batteries
« Reply #80 on: July 04, 2020, 06:25:28 pm »
I think there's a lot of badly designed products out there, built down to a price.

Very true.

I've seen LM78L05 regulators used in devices powered by 9V alkaline batteries, when a low-dropout regulator should have been used instead. Quite often this increases the cost of ownership, compared to spending a little more on the device itself.

I suppose you're talking about the case where the user uses rechargeable 9V batteries instead? I don't quite remember how low a typical 9V NiMh battery can go for instance? Something like 6V or 6.5V? Then yeah, a 78L05 wouldn't cut it.

A better approach (although a bit more expensive usually due to the inductor and more expensive regulator) is to use a buck converter, instead of typically dissipating almost 50% in the regulator itself: (9V-5V)*I. Loosing almost half of the capacity of the battery just to shave maybe one dollar, probably less? Eek.
 

Offline Rick Law

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Re: Ban of non-rechargeable batteries
« Reply #81 on: July 04, 2020, 06:55:55 pm »
...
I suppose you're talking about the case where the user uses rechargeable 9V batteries instead? I don't quite remember how low a typical 9V NiMh battery can go for instance? Something like 6V or 6.5V? Then yeah, a 78L05 wouldn't cut it.
...

Hard to remember because some NiMH 9V manufacturer (TEnergy Centura line for example) use 7 cells and some use merely 6 cells.  So you have a mix of nominal voltages.

At 7 cells, nominal NiMH cell total voltage is 8.4V.  So my 7-cell  TEnergy Centura (which is in my UT61E) can happily delivery most of it energy at around 8.4V and it stays around 8.4V until remaining capacity is below 10%.  When it does go below, it crashes down like a rock since most of it energy is delivered.  That is the behavior I want, keep going till near death.

At 6 cells, , nominal NiMH cell total voltage is 7.2V.  It is half-dead coming off the gate.  I would imagine it wouldn't reach 6V for a while, but 6V to 7V is not a happy range.  Too bad 6 cells seem to be the rule rather than the exception.

I did a mini-review of the TEnergy Centura 9V long time ago (2013) when the cells were new - it didn't drop below 8V until 94% to 96% of the energy was delivered at 1/10 C discharge.  At a higher 1/3 C discharge, it kept above 8V till 92% of the energy was delivered.  Once I get my bench cleaned up (and found that two load resisters I used for the tests), I may do a follow up and see how that same 6 years old Centura is holding up these days - it has been in my UT61E since the test so it is kind of an old man of a battery now...
https://www.eevblog.com/forum/reviews/tenergy-centura-9v-and-tn141-mini-review

EDIT: Rather than using numbers from memory, I reworded a bit to use the actual numbers I had -- since I found my old post
« Last Edit: July 04, 2020, 07:18:22 pm by Rick Law »
 
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Offline james_s

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Re: Ban of non-rechargeable batteries
« Reply #82 on: July 04, 2020, 08:43:34 pm »
https://en.wikipedia.org/wiki/Nickel–metal_hydride_battery

The low self-discharge type has been introduced in 2005, so that's 15 years ago, not 25. Those cells are pretty good indeed, although with a slighly lower capacity as a trade-off. But even to this day, not all NiMh batteries on the market are of LSD type, far from it (and the average joe is likely to buy non-LSD batteries, because those are cheaper and because they just don't know... or even just because they will tend to go for the highest capacities, which look attractive, which are likely NOT to be of LSD type.) As an example, a typical capacity for NiMh LSD AA batteries is 2500mAh, whereas you can find NiMh AA batteries up to 3000mAh, which are unlikely to be LSD IMHO.

Standard NiMh batteries OTOH still have a relatively high self-discharge rate.

Where can you even buy standard NiMH batteries anymore? Maybe random China sellers? I haven't seen them in years, all the ones that the local stores around here carry are pre-charged (LSD), all of the Amazon branded ones, all of the Ikea ones, even the cheap stuff like Tenergy is LSD, albeit not as good quality as the Japanese stuff. It's a complete non-issue, yes I'm sure if you look hard enough you can find garbage, just like if you can easily find junk alkaline cells that leak (Duracell, Kirkland, etc) but excellent quality NiMH cells have been widely available mainstream products for over a decade, I literally have not bought a single disposable AAA, AA or 9V battery in more than 10 years and this has not required any extreme measures or sacrifices. It surprises me that anyone still buys them, I can only assume they are either "penny wise and pound foolish" or they are not aware that technology has progressed.
 

Offline Zero999

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Re: Ban of non-rechargeable batteries
« Reply #83 on: July 04, 2020, 08:55:27 pm »
I think there's a lot of badly designed products out there, built down to a price.

Very true.

I've seen LM78L05 regulators used in devices powered by 9V alkaline batteries, when a low-dropout regulator should have been used instead. Quite often this increases the cost of ownership, compared to spending a little more on the device itself.

I suppose you're talking about the case where the user uses rechargeable 9V batteries instead? I don't quite remember how low a typical 9V NiMh battery can go for instance? Something like 6V or 6.5V? Then yeah, a 78L05 wouldn't cut it.

A better approach (although a bit more expensive usually due to the inductor and more expensive regulator) is to use a buck converter, instead of typically dissipating almost 50% in the regulator itself: (9V-5V)*I. Loosing almost half of the capacity of the battery just to shave maybe one dollar, probably less? Eek.
I'm talking about alkaline batteries. If your device won't work at 7.2V, then it's wasting a large proportion of the battery life of a 9V alkaline.

Here's some tests showing the discharge curves of some 9V alkaline batteries.
https://www.powerstream.com/9V-Alkaline-tests.htm

Always design for a lower cut-off voltage of 6V and not only will the device work off NiMH, but it will also make full use of ordinary alkaline batteries.
 

Online all_repair

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Re: Ban of non-rechargeable batteries
« Reply #84 on: July 05, 2020, 01:28:17 am »
One does not have the luxury to test or to know how a device going to draw on its 9V battery before owning one.  My LSD NiMH 9V batteries are being replaced by 9V rechargeable lithium.  Save quite a bit of time and hassle in troubleshooting is it power or insufficient voltage problem.
 

Offline Nusa

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Re: Ban of non-rechargeable batteries
« Reply #85 on: July 05, 2020, 05:44:42 am »
No, he's right, some times there is clearly an idiot involved in the engineering. The cheap TM-904C thermometer that's been around for years uses a 9V battery*. The 9V battery goes to a 3.3V regulator, which then goes to the switch that turns the device on/off. Two problems: a) using a 9V battery for a 3V device is just stupid, and b) the switch is on the wrong side of the regulator, so the battery goes flat in the drawer after a few weeks, even if switched off.

The fix was actually quite simple: replace the 9V with 2 AAA batteries (existing battery compartment is large enough) and bypass and remove the regulator from the circuit. Actual draw of the circuit without regulator is very small, so batteries will last for many months, even if left on. Lo-battery indicator comes on at 2.3V

*These days you can buy a 3V version instead, but the 9V version is still available. Originally, 9V was the only option.
 

Offline Raj

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Re: Ban of non-rechargeable batteries
« Reply #86 on: July 05, 2020, 06:25:29 am »
out wall clocks having AA, I'm slowly replacing them with my own PoE IoT (local network) clocks cause the standard quarts clocks are too inaccurate for my taste (they go off by 5 minutes every month, donno why so much deviation.

That's odd, do you have wide temperature swings in your house? I have a few different quartz clocks and they typically hold to far better than that, maybe a few minutes at most in a year.

Could be...I have no central AC
Some clocks have direct sunlight falling on them through the window while others are in air conditioned room but they all deviate hugely from the internet based clock. I guess it's as expected with clocks that I actually got for free with heavy appliances.
 

Offline james_s

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Re: Ban of non-rechargeable batteries
« Reply #87 on: July 05, 2020, 05:56:17 pm »
Sunlight falling on the clock controlled by a quartz crystal will definitely affect the accuracy. The clocks built into large appliances often use the mains frequency as a timebase so the accuracy of those will depend on the electrical grid.
 

Offline tooki

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Re: Ban of non-rechargeable batteries
« Reply #88 on: July 05, 2020, 09:07:24 pm »
And long term, the electrical grid is extremely accurate.
 

Offline james_s

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Re: Ban of non-rechargeable batteries
« Reply #89 on: July 06, 2020, 05:21:36 am »
And long term, the electrical grid is extremely accurate.

It is in much of the world, but not everywhere. Most of the old Soviet digital clocks used a crystal timebase for that reason. The person with the clocks is in India, I have no idea how stable the power grid frequency is there.
 
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Offline GlennSprigg

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Re: Ban of non-rechargeable batteries
« Reply #90 on: July 06, 2020, 12:19:56 pm »
The 'problem' I have at times with 'AA' 'Rechargeables' is in the likes of some Cameras etc.
Rechargeables are typically 1.2v instead of 1.5v. So "Low Battery" comes on too early!!!  :-\
That's because the device is poorly designed and depending on the current draw, could be wasting as much as half the capacity of alkaline cells. A properly designed device should operated down to at least 1V per cell. I hate this kind of junk.

I think it depends what the original cct was designed for. I was talking about a lot of equipment designed
for 'AA' batteries, (ok, often old), that when powered with '1.2v' is quickly underpowered...
What sort of device was it: high or low power drain?

I would expect a higher power drain load to work better down to lower voltages, than something with a very low current draw. Alkaline batteries typically have a relatively high impedance, compared to NiMH, so a 1.5V battery will quickly drop to 1.2V, with any significant load. If I remember rightly incandescent torches (flashlight)  used to use a slightly lower voltage rated lamp, than the battery voltage, so a two cell unit would typically have a bulb rated to 2.2V, rather than 3V.

Lower powered devices will probably do poorer on lower voltages, because the cell voltage should remain higher, at low current draws, but I still hope most will function down to 1.2V, with no problem.

I think there's a lot of badly designed products out there, built down to a price. I've seen LM78L05 regulators used in devices powered by 9V alkaline batteries, when a low-dropout regulator should have been used instead. Quite often this increases the cost of ownership, compared to spending a little more on the device itself.

Hi there, 'Zero999'. Sorry about the delay. Only on forum every 2 or 3 days!!   :(
The main item I was talking about, is my Kodak Z710 digital camera, which I like....

It's not a junk cheap product, (or wasn't..), and has a fantastic proper main lens.  I understand that such
rechargeable batteries have better 'current' abilities, even when dropping to 1.2v, especially with repeated
use of the 'Flash', but even new (charged) rechargeables  only give me about 15 shots with the flash!   :palm:
Diagonal of 1x1 square = Root-2. Ok.
Diagonal of 1x1x1 cube = Root-3 !!!  Beautiful !!
 

Offline TimFox

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Re: Ban of non-rechargeable batteries
« Reply #91 on: July 06, 2020, 02:48:27 pm »
And long term, the electrical grid is extremely accurate.

It is in much of the world, but not everywhere. Most of the old Soviet digital clocks used a crystal timebase for that reason. The person with the clocks is in India, I have no idea how stable the power grid frequency is there.

Frequency stability is very important with systems interconnected in an electrical grid, but is not so important with isolated distribution systems.  This situation varies even within individual countries.
 
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Online SiliconWizard

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Re: Ban of non-rechargeable batteries
« Reply #92 on: July 06, 2020, 03:12:21 pm »
I think there's a lot of badly designed products out there, built down to a price.

Very true.

I've seen LM78L05 regulators used in devices powered by 9V alkaline batteries, when a low-dropout regulator should have been used instead. Quite often this increases the cost of ownership, compared to spending a little more on the device itself.

I suppose you're talking about the case where the user uses rechargeable 9V batteries instead? I don't quite remember how low a typical 9V NiMh battery can go for instance? Something like 6V or 6.5V? Then yeah, a 78L05 wouldn't cut it.

A better approach (although a bit more expensive usually due to the inductor and more expensive regulator) is to use a buck converter, instead of typically dissipating almost 50% in the regulator itself: (9V-5V)*I. Loosing almost half of the capacity of the battery just to shave maybe one dollar, probably less? Eek.
I'm talking about alkaline batteries. If your device won't work at 7.2V, then it's wasting a large proportion of the battery life of a 9V alkaline.

Here's some tests showing the discharge curves of some 9V alkaline batteries.
https://www.powerstream.com/9V-Alkaline-tests.htm

Always design for a lower cut-off voltage of 6V and not only will the device work off NiMH, but it will also make full use of ordinary alkaline batteries.

I see, and agree with the general idea. Of course always design you power supplies so that they can work over the full operating voltage range of the batteries it's made for.
I haven't used 9V batteries in designs much at all, so I wasn't expecting them to still hold a significant charge when their voltage is below ~7V, but thinking about it, it makes sense. I guess they often are made of the equivalent of 6 1.5V cells? And yeah, 1.5V alkaline cells still typically hold a significant charge down to 1V or even 0.9V.

Anyway, as I said for this particular example, using a linear regulator is itself a bad idea as far as capacity is concerned. The chunk of the capacity you're going to waste just by dissipating power (6V to 9V down to 5V) will be much more significant than what you're going to waste if it stops working at around 7V or so.

Of course if you don't have a choice, it's better to use an LDO. But it's even better to use a switching regulator here, if you can.
 

Offline Zero999

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Re: Ban of non-rechargeable batteries
« Reply #93 on: July 07, 2020, 08:59:23 am »
I think there's a lot of badly designed products out there, built down to a price.

Very true.

I've seen LM78L05 regulators used in devices powered by 9V alkaline batteries, when a low-dropout regulator should have been used instead. Quite often this increases the cost of ownership, compared to spending a little more on the device itself.

I suppose you're talking about the case where the user uses rechargeable 9V batteries instead? I don't quite remember how low a typical 9V NiMh battery can go for instance? Something like 6V or 6.5V? Then yeah, a 78L05 wouldn't cut it.

A better approach (although a bit more expensive usually due to the inductor and more expensive regulator) is to use a buck converter, instead of typically dissipating almost 50% in the regulator itself: (9V-5V)*I. Loosing almost half of the capacity of the battery just to shave maybe one dollar, probably less? Eek.
I'm talking about alkaline batteries. If your device won't work at 7.2V, then it's wasting a large proportion of the battery life of a 9V alkaline.

Here's some tests showing the discharge curves of some 9V alkaline batteries.
https://www.powerstream.com/9V-Alkaline-tests.htm

Always design for a lower cut-off voltage of 6V and not only will the device work off NiMH, but it will also make full use of ordinary alkaline batteries.

I see, and agree with the general idea. Of course always design you power supplies so that they can work over the full operating voltage range of the batteries it's made for.
I haven't used 9V batteries in designs much at all, so I wasn't expecting them to still hold a significant charge when their voltage is below ~7V, but thinking about it, it makes sense. I guess they often are made of the equivalent of 6 1.5V cells? And yeah, 1.5V alkaline cells still typically hold a significant charge down to 1V or even 0.9V.

Anyway, as I said for this particular example, using a linear regulator is itself a bad idea as far as capacity is concerned. The chunk of the capacity you're going to waste just by dissipating power (6V to 9V down to 5V) will be much more significant than what you're going to waste if it stops working at around 7V or so.

Of course if you don't have a choice, it's better to use an LDO. But it's even better to use a switching regulator here, if you can.
Yes, alkaline 9V batteries are made of six 1.5V cells.

I forgot to say, NiMH has a much lower impedance, than alkaline, so if a device is properly designed, the lower voltage shouldn't be a problem.
http://adventuresinarduinoland.blogspot.com/2011/02/easy-nimh-discharge-curves_08.html
http://lipobatterymanufacturers.weebly.com/lipo-battery-manufacturer-blog/lipo-vs-nimh-batteries
 

Offline helius

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Re: Ban of non-rechargeable batteries
« Reply #94 on: October 15, 2020, 06:10:50 am »
I have tried some experiments with recharging alkaline AAs (not Duracells, that would be futile, but Hitachi Maxells). Even when using very slow charging at 100 mA, and a very conservative termination of 1.55 V, there was slight leakage on 1 cell out of 4. The alkaline cells that were intended for recharging would have had different geometry to handle gas generation and so on, and even those were prone to leakage, one reason they didn't last long on the market.

I have done a further experiment on some nickel oxyhydroxide cells (Duracell PowerPix, made in Japan). Since the nickel chemistry has a higher open-circuit voltage, I used a termination of 1.7V and 200 mA. Results were okay at first, but the cells spilled their guts after a few weeks in storage. These are definitely not candidates for recharging. Interestingly, the spilled electrolyte is opaque white, whereas liquid leaking from alkalines is clear.
 

Offline BrianHG

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Re: Ban of non-rechargeable batteries
« Reply #95 on: October 15, 2020, 09:39:25 am »
I've placed my caliper's the silver oxide battery in my caliper on my bench supply at 1.8v for 1 day around every 2 years now just as the digits begin to fade.  It's been like this for around 15 years.  Am I doing anything wrong?

Also, I just tied 3.6v to my car starter's lithium CR1216 battery for a day once it died.  After the day, it actually read an even lower voltage, like 1.9v, however I found a trick.  I shorted out the battery for about 5 seconds, and then battery read 3.4v right after.  My car starter has been working fine for over a month, so I cannot say as to how long the recharged lithium will last.
 
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Offline eti

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Re: Ban of non-rechargeable batteries
« Reply #96 on: October 16, 2020, 12:19:00 am »
Got to love a bit of over enthusiastic greenwash.
 

Online vk6zgo

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Re: Ban of non-rechargeable batteries
« Reply #97 on: October 16, 2020, 01:35:49 am »
having to recharge stuff in a pinch sucks and it sucks even more for businesses. They will LAUGH at the cost of batteries for the stuff they do. Its debilitating to maintain space and procedures for charging.

Basically you are getting into 'fleet ownership' when you go into rechargeable batteries. Disposable keeps things running so long the stores are open. The last thing some office needs is some battery nazi telling people to recharge stuff all the time.

So I can come home and I want to cook meat then some batteries need to be charged for a thermometer because I was busy with things and I got to find a charger and plug stuff in and give me a fucking break just put some god damn AA's in the fucking thing and GET ON WITH LIFE.

Cook your meat by guesswork, as the Almighty intended! ;D
 

Offline MarkR42

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Re: Ban of non-rechargeable batteries
« Reply #98 on: October 16, 2020, 08:44:00 am »
Update:

The piezo activated wireless doorbell thing has failed after just a couple of years in a moderately dam environment, I have concluded that a primary cell would be more reliable. Particularly as this thing could probably run for many years on a single small cell.

Primary cells can be replaced, the piezo thing looks totally unmaintainable (I opened it, but I wasn't able to see any problem, I guess the magic piezo pixies went on strike)
 

Offline Red Squirrel

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Re: Ban of non-rechargeable batteries
« Reply #99 on: October 16, 2020, 08:46:10 am »
I wish everything would just switch to using lithium ion cells.  Basically treat protected 18650 or perhaps a new smaller form factor the same way as AA batteries.    They have the advantage of being rechargeable and also having a very low self discharge rate compared to say, Ni-MH.   Ideally a new form factor that is also designed to be handled by the average joe would maybe be in order.  Something with a built in fuse perhaps so that even if you short it out it's not going to explode.  Maybe a poly fuse?
 
The following users thanked this post: chris_leyson, tooki


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