Disposable batteries VS rechargeable batteries

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bernardd
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by bernardd » 13/11/10, 14:02

I think that if we made a small box based on supercapacitors, and output voltage adjustable finely by an adapted regulation, because more constrained by the chemical process of the battery, there would be a market.
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elephant
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by elephant » 13/11/10, 15:36

Note that regulation means waste in the form of heat. The diodes also allow you to inexpensively drop voltage from 0,5 to 0,75 V. In your case, adapt with great care a small socket in the door of the battery compartment and separate block?

(as it was optional on the big Nikon and the big Canon in the 70's and 80's)

(Ouch, still the problem of loss of warranty, nonetheless)
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by bernardd » 13/11/10, 15:43

Unless we knew how to make a system smaller than current batteries, but that does not seem to be the case for current supercapacitors. Although if the search is faster, there is no need to store as much energy.
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by Petrus » 13/11/10, 15:46

elephant wrote:I have Once seen batteries announced at a higher voltage about ten years ago, at my dealer of electronic components, but it did not last (completely forgot the brand, it is more than 10 years ago, there n there was no alternative to Ni-Cd yet)


It had to be rechargeable alkaline batteries, they have the advantage of providing 1,5V but they do not support many charge cycles.

It's been a while since I bought more disposable batteries and when the ones I have left give up my soul, I'm going to buy NI-MH with low self-discharge (Ready to use, Always ready ... there are several names depending on the brand): http://forum.hardware.fr/hfr/Photonumer ... 46_332.htm
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by Christophe » 13/11/10, 16:23

Petrus wrote:I will buy NI-MH low self discharge (Ready to use, Always ready ... there are several names depending on the brand)


a) Good choice, at that time, think about the store of your forum prefer : Cheesy:
batteries, flashlights and chargers

b) Well I weighed a few batteries (all are NiMh) with a precision balance at 0.1 g:

AA 2700mAH https://www.econologie.com/shop/piles-ac ... p-152.html : 30.1g
AAA AlwaysReady 800mAh https://www.econologie.com/shop/accus-ni ... p-150.html : 12.0 g
AA AlwaysReady 2100mAh https://www.econologie.com/shop/accus-ni ... p-151.html : 28.2 g

Panasonic AA 2100 mAh: 27.4 g
CEL AA 800 mAh: 15.4 g

And one AA alkaline Duracel Plus: 24.7 g


Question: does the mass depend on the charge level?

It seems to me that the alkalines are lighter when cooked ... but I never weighed ...

It deserves to be checked.

c)
Obamot wrote:Why it is also impossible to find 1,5V rechargeable,


There are many 1.5V AA size batteries, they are Zinc something (I know more) but are still very rare. There is at least 1 manufacturer in the USA that I found a few months ago but that I find more.

http://www.industrie.com/it/electrotech ... c-air.8356

The German chemist signs an agreement with Revolt Technology to accelerate the development of this technology of accumulators.

The young Swiss company Revolt Technology has just concluded a partnership with BASF in order to accelerate the development and the marketing of its zinc-air battery technology.
The German chemist intends to rely on its expertise in materials and on its know-how in electrochemistry to advance the technology. The two partners will jointly develop the materials and elements necessary for further development and marketing.

Thanks to this partnership, BASF is positioning itself in a market with high potential. Zinc-air batteries are an attractive technology for the future, both in terms of energy performance and in terms of the environment. Compared to that of current lithium-ion batteries, it would offer an energy density up to three times higher while being safer and more environmentally friendly.
Ridha Loukil


Ayé I found it is Nickel Zinc (AA NiZn) and it is even in 1.6V:
Image
No idea if it's distributed in Europe.

* Highest Performance for high-drain applications
* Environmentally friendly and 100% recyclable
* 1.6 VoHs- equal to an alkaline battery
* Higher power (30% higher voltage than NiMH)
*We recommend PowerGenix Chargers

PowerGenix NiZn AA batteries are more powerful than NiMH and NiCD (1.6V for NiZn vs. 1.2V for other rechargeable). NiZn is also environmentally safe, unlike throwaway alkaline. Every part of this battery is recyclable, from the interior components to the packaging it comes in.

NiZn technology is perfectly suited for high-tech devices like MP3 players, digital cameras, toys, and LED lights.

PowerGenix NiZn batteries must be charged using a NiZn charger: we recommend the PowerGenix Quick 1-1.5 Hr. Charger.

Experience the Power by making the change to cutting-edge, environmentally friendly PowerGenix NiZn Chargers and Batteries today


d)
Obamot wrote:So you confirm that with NiMh, if the voltage drops below 1V, they screw up on their own! I know you have nothing to do with it 'Tophe, but I always found it a real scandal!


??? Where do I confirm this? No I confirm nothing at all, besides this Camelion charger has a regeneration function for highly discharged batteries: https://www.econologie.com/shop/chargeur ... p-186.html

Image

Intelligent battery charger with 6 levels of protection and regeneration function for NiCd and NiMh batteries (2700 mAh max). 4 charging circuits. Supplied with 3 sector adaptation sheets for travel. "Regeneration" function for deep discharge batteries (0V).


Most of the batteries that are considered empty (by the device that uses them) in my home are between 0.6 and 0.8 V ...

e) As said above: what ruins the batteries are not the dumps but the bullshit charges ...Avoid absolutely non-intelligent fast chargers because they will shoot the batteries... (overheating, overvoltage ...) even those equipped with a timer which generally corresponds to the maximum capacity (therefore bye bye weaker batteries ...)
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by Obamot » 13/11/10, 18:49

Christophe wrote:d)
Obamot wrote:So you confirm that with NiMh, if the voltage drops below 1V, they screw up on their own! I know you have nothing to do with it 'Tophe, but I always found it a real scandal!
??? Where do I confirm this? No I confirm nothing at all,

At home, we say: "who is silent consents".

Thank you, at least it's clear. Finally 1,6V!

... ah, if ever. It is not only Ansamann who are stew (several types and VERY expensive) will not buy them at Lidl either! That's fair (although they have other products very well in other areas: must sort!).
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by dedeleco » 13/11/10, 18:54

Question: does the mass depend on the charge level?


As it remains sealed in normal operation (if corrosive potassium leakage), its weight is fixed ie the weight of nickel and rare earths (not light) proportional to the capacity !!

http://en.wikipedia.org/wiki/Nickel-met ... de_battery
This process allows NiMH cells to remain sealed in normal operation and to be maintenance-free.

Same type long life battery:
http://en.wikipedia.org/wiki/Nickel_hydrogen_battery
http://www.che.sc.edu/faculty/weidner/P ... 41_326.pdf
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by Petrus » 13/11/10, 20:21

Christophe wrote:Ayé I found it is Nickel Zinc (AA NiZn) and it is even in 1.6V:
Image
No idea if it's distributed in Europe.

* Highest Performance for high-drain applications
* Environmentally friendly and 100% recyclable
* 1.6 VoHs- equal to an alkaline battery
* Higher power (30% higher voltage than NiMH)
*We recommend PowerGenix Chargers

PowerGenix NiZn AA batteries are more powerful than NiMH and NiCD (1.6V for NiZn vs. 1.2V for other rechargeable). NiZn is also environmentally safe, unlike throwaway alkaline. Every part of this battery is recyclable, from the interior components to the packaging it comes in.

NiZn technology is perfectly suited for high-tech devices like MP3 players, digital cameras, toys, and LED lights.

PowerGenix NiZn batteries must be charged using a NiZn charger: we recommend the PowerGenix Quick 1-1.5 Hr. Charger.

Experience the Power by making the change to cutting-edge, environmentally friendly PowerGenix NiZn Chargers and Batteries today


Very interesting these batteries, do you have more info on it? (Capacity, internal resistance, self-discharge, No. of charge cycles, etc.)
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by Christophe » 13/11/10, 20:25

I don't know ... surprisingly the capacity is not indicated on the page that I copied pasted ...

Search the manufacturer's site: www.powergenix.com + google for the rest of the info ...
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elephant
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by elephant » 13/11/10, 22:38

It may well be what I saw. Is it possible 10 years ago? But indeed, basic voltage does not equal capacity. The small batteries I had to replace the PX675 mercury in my reflex were also zinc air for hearing aids.
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