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Great AA/AAA Battery Test 2022 by Gough Lui

Started by a a November 14, 2022
Great AA/AAA Battery Test 2022 by Gough Lui

https://goughlui.com/

Could you ask Gough Lui
to use the same number of cells by brand name for tests
not promoting 100 Amazon Cells, since Amazon is not brand name for AA or AAA cells and stays for seller.

So limiting number of cells for tests to 2 pieces
we don't have to test 316 cells 23 x 2 = 46
reducing testing time 6 times

Injecting lithium AA cells  by a single maniufacturer for the tests
makes no sense since it's like mixing Boeing jets with Tesla cars

What matters is what makes voltage of Lithium AA cell to be reduced to 1.8V ?

"It is unfortunate that many devices prefer to use AAA cells instead of AA cells, as AA cells can offer about 2.4x the amount of energy of an AAA cell and often comes at a similar price.

The above comment makes no sense since size of cells must match the size of battery compartment, so there is no room for 3 x AA cells in
case of small devices proving room for 3 x AAA smaller cells.


"The Duracell parallel import cells were manufactured in 2017, having five years of sitting on a shelf. The result of this is significantly impaired capacity and increased internal resistance, leading to the AA cell performing similarly to worse than some fresh AAA cells.

Another unfair comment.

Ask Gough Lui to buy and use new Duracell cells for tests
or use 5 years old cells by Amazon for tests.

"Carbon-zinc cells remain a poor choice – even the AA carbon-zinc cell managed to perform worse than the worst-performing AAA alkaline cell. Purchasing carbon-zinc cells is likely to be false economy and they should really be phased out.

Another unfair comment.

We buy AA and AAA cells by price
so low price is a good choice  for low power consuming devices.

So what is missing is cost of energy stored in AA and AAA cells by brand name.

I prefer to pay $0.10 a piece vs. $1 a piece

Ask Gough Lui not to promote Amazon cells since Amazon is not a brand name for batteries.

It's like Tesco AA or AAA cells, sold by Tesco.

Placing Amazon Basic AA cells in the first place 3 times
вторник, 15 ноября 2022 г. в 01:48:36 UTC+6, a a:
> Great AA/AAA Battery Test 2022 by Gough Lui > > https://goughlui.com/ > > Could you ask Gough Lui > to use the same number of cells by brand name for tests > not promoting 100 Amazon Cells, since Amazon is not brand name for AA or AAA cells and stays for seller. > > So limiting number of cells for tests to 2 pieces > we don't have to test 316 cells 23 x 2 = 46 > reducing testing time 6 times > > Injecting lithium AA cells by a single maniufacturer for the tests > makes no sense since it's like mixing Boeing jets with Tesla cars > > What matters is what makes voltage of Lithium AA cell to be reduced to 1.8V ? > > "It is unfortunate that many devices prefer to use AAA cells instead of AA cells, as AA cells can offer about 2.4x the amount of energy of an AAA cell and often comes at a similar price. > > The above comment makes no sense since size of cells must match the size of battery compartment, so there is no room for 3 x AA cells in > case of small devices proving room for 3 x AAA smaller cells. > > > "The Duracell parallel import cells were manufactured in 2017, having five years of sitting on a shelf. The result of this is significantly impaired capacity and increased internal resistance, leading to the AA cell performing similarly to worse than some fresh AAA cells. > > Another unfair comment. > > Ask Gough Lui to buy and use new Duracell cells for tests > or use 5 years old cells by Amazon for tests. > > "Carbon-zinc cells remain a poor choice – even the AA carbon-zinc cell managed to perform worse than the worst-performing AAA alkaline cell. Purchasing carbon-zinc cells is likely to be false economy and they should really be phased out. > > Another unfair comment. > > We buy AA and AAA cells by price > so low price is a good choice for low power consuming devices. > > So what is missing is cost of energy stored in AA and AAA cells by brand name. > > I prefer to pay $0.10 a piece vs. $1 a piece > > Ask Gough Lui not to promote Amazon cells since Amazon is not a brand name for batteries. > > It's like Tesco AA or AAA cells, sold by Tesco. > > Placing Amazon Basic AA cells in the first place 3 times
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On 16/11/2022 09:10, David Burghalter wrote:
> вторник, 15 ноября 2022 г. в 01:48:36 UTC+6, a a: >> Great AA/AAA Battery Test 2022 by Gough Lui >> >> https://goughlui.com/ >> >> Could you ask Gough Lui >> to use the same number of cells by brand name for tests >> not promoting 100 Amazon Cells, since Amazon is not brand name for AA or AAA cells and stays for seller. >> >> So limiting number of cells for tests to 2 pieces >> we don't have to test 316 cells 23 x 2 = 46 >> reducing testing time 6 times >> >> Injecting lithium AA cells by a single maniufacturer for the tests >> makes no sense since it's like mixing Boeing jets with Tesla cars
It is a useful comparison of the other technology though. Some things are better powered by a lithium cell.
>> >> What matters is what makes voltage of Lithium AA cell to be reduced to 1.8V ? >> >> "It is unfortunate that many devices prefer to use AAA cells instead of AA cells, as AA cells can offer about 2.4x the amount of energy of an AAA cell and often comes at a similar price. >> >> The above comment makes no sense since size of cells must match the size of battery compartment, so there is no room for 3 x AA cells in >> case of small devices proving room for 3 x AAA smaller cells.
Oh I think he has a very valid point. My desktop phone base station has a 20cm square footprint consumes and 2x AAA per month. It won't work at all on rechargables because their voltage isn't high enough to bias the LCD screen which displays the CLID of incoming calls. There is no reason at all why it couldn't accept 2x AA instead or be designed so that it would work correctly with a rechargeable battery. Phone handsets made down to a small physical size 2x AAA is fair enough.
>> >> "The Duracell parallel import cells were manufactured in 2017, having five years of sitting on a shelf. The result of this is significantly impaired capacity and increased internal resistance, leading to the AA cell performing similarly to worse than some fresh AAA cells. >> >> Another unfair comment. >>
I think that one is entirely justified. I won't touch Duracell any more they leak like hell in kit and whilst still in date. They have been trading on their once previously good brandname for far too long :( I suspect there may be a lot of counterfeits about.
>> Ask Gough Lui to buy and use new Duracell cells for tests >> or use 5 years old cells by Amazon for tests. >> >> "Carbon-zinc cells remain a poor choice – even the AA carbon-zinc cell managed to perform worse than the worst-performing AAA alkaline cell. Purchasing carbon-zinc cells is likely to be false economy and they should really be phased out. >> >> Another unfair comment.
They are only really any use for one time throw away tasks.
>> We buy AA and AAA cells by price >> so low price is a good choice for low power consuming devices. >> >> So what is missing is cost of energy stored in AA and AAA cells by brand name. >> >> I prefer to pay $0.10 a piece vs. $1 a piece >> >> Ask Gough Lui not to promote Amazon cells since Amazon is not a brand name for batteries. >> >> It's like Tesco AA or AAA cells, sold by Tesco.
For a while after he does his review they are probably the same battery as he tested. A few years ago Aldi/Lidl in the UK were selling truly excellent rechargeable NiMH for a *very* good price. I still have a few working. Then of course the supplier changed and they were lacklustre. Good while it lasted though.
>> Placing Amazon Basic AA cells in the first place 3 times
I'm surprised they did so well. I'm also surprised by the brands I have never heard of and absence of major brands like eg Kodak, Everready, Maxell and Panasonic. The latter is my favourite at the moment. ISTR Maxell were one of the first with Alkaline cells on the market. -- Regards, Martin Brown
On Wednesday, November 16, 2022 at 1:34:44 AM UTC-8, Martin Brown wrote:
...
> >> What matters is what makes voltage of Lithium AA cell to be reduced to 1.8V ? > >> > >> "It is unfortunate that many devices prefer to use AAA cells instead of AA cells, as AA cells can offer about 2.4x the amount of energy of an AAA cell and often comes at a similar price. > >> > >> The ais bove comment makes no sense since size of cells must match the size of battery compartment, so there is no room for 3 x AA cells in > >> case of small devices proving room for 3 x AAA smaller cells. > Oh I think he has a very valid point. My desktop phone base station has > a 20cm square footprint consumes and 2x AAA per month. It won't work at > all on rechargables because their voltage isn't high enough to bias the > LCD screen which displays the CLID of incoming calls.
Do you mean too high? Alkaline is 1.5V. Lithiums are 1.8V, 3.2V, 3,7V and perhaps 4.1V. I use rechargeable 3.7V Li with divider (to burn half of the energy) to run a 1.5V clock.
On 16/11/2022 12:54, Ed Lee wrote:
> On Wednesday, November 16, 2022 at 1:34:44 AM UTC-8, Martin Brown wrote: > ... >>>> What matters is what makes voltage of Lithium AA cell to be reduced to 1.8V ? >>>> >>>> "It is unfortunate that many devices prefer to use AAA cells instead of AA cells, as AA cells can offer about 2.4x the amount of energy of an AAA cell and often comes at a similar price. >>>> >>>> The ais bove comment makes no sense since size of cells must match the size of battery compartment, so there is no room for 3 x AA cells in >>>> case of small devices proving room for 3 x AAA smaller cells.
>> Oh I think he has a very valid point. My desktop phone base station has >> a 20cm square footprint consumes and 2x AAA per month. It won't work at >> all on rechargables because their voltage isn't high enough to bias the >> LCD screen which displays the CLID of incoming calls. > > Do you mean too high? Alkaline is 1.5V. Lithiums are 1.8V, 3.2V, 3,7V and perhaps 4.1V.
No I mean too low to take for example 2x AAA NiMH (like the handsets). I did consider a lithium rechargeable 3.2v AAA and a piece of copper as a spacer.
> I use rechargeable 3.7V Li with divider (to burn half of the energy) to run a 1.5V clock.
That seems like a waste! I use spent for high current applications primary cells up in clocks and LCD based consumer devices. -- Regards, Martin Brown
On Wednesday, November 16, 2022 at 7:27:17 AM UTC-8, Martin Brown wrote:
> On 16/11/2022 12:54, Ed Lee wrote: > > On Wednesday, November 16, 2022 at 1:34:44 AM UTC-8, Martin Brown wrote: > > ... > >>>> What matters is what makes voltage of Lithium AA cell to be reduced to 1.8V ? > >>>> > >>>> "It is unfortunate that many devices prefer to use AAA cells instead of AA cells, as AA cells can offer about 2.4x the amount of energy of an AAA cell and often comes at a similar price. > >>>> > >>>> The ais bove comment makes no sense since size of cells must match the size of battery compartment, so there is no room for 3 x AA cells in > >>>> case of small devices proving room for 3 x AAA smaller cells. > > >> Oh I think he has a very valid point. My desktop phone base station has > >> a 20cm square footprint consumes and 2x AAA per month. It won't work at > >> all on rechargables because their voltage isn't high enough to bias the > >> LCD screen which displays the CLID of incoming calls. > > > > Do you mean too high? Alkaline is 1.5V. Lithiums are 1.8V, 3.2V, 3,7V and perhaps 4.1V. > No I mean too low to take for example 2x AAA NiMH (like the handsets). > I did consider a lithium rechargeable 3.2v AAA and a piece of copper as > a spacer.
I am sure they can make AAA Lithium, if there is a market. The proposed CATL 4.1V is almost half of some 9V devices (e.g. multi-meters).
> > I use rechargeable 3.7V Li with divider (to burn half of the energy) to run a 1.5V clock. > That seems like a waste! I use spent for high current applications > primary cells up in clocks and LCD based consumer devices.
I got hundreds of 30% to 50% 18650s. Not a waste if i would otherwise waste them. I put a bunch of them in parallel and just recharge them occasionally.
On Wednesday, November 16, 2022 at 7:38:38 AM UTC-8, Ed Lee wrote:
> On Wednesday, November 16, 2022 at 7:27:17 AM UTC-8, Martin Brown wrote: > > On 16/11/2022 12:54, Ed Lee wrote: > > > On Wednesday, November 16, 2022 at 1:34:44 AM UTC-8, Martin Brown wrote: > > > ... > > >>>> What matters is what makes voltage of Lithium AA cell to be reduced to 1.8V ? > > >>>> > > >>>> "It is unfortunate that many devices prefer to use AAA cells instead of AA cells, as AA cells can offer about 2.4x the amount of energy of an AAA cell and often comes at a similar price. > > >>>> > > >>>> The ais bove comment makes no sense since size of cells must match the size of battery compartment, so there is no room for 3 x AA cells in > > >>>> case of small devices proving room for 3 x AAA smaller cells. > > > > >> Oh I think he has a very valid point. My desktop phone base station has > > >> a 20cm square footprint consumes and 2x AAA per month. It won't work at > > >> all on rechargables because their voltage isn't high enough to bias the > > >> LCD screen which displays the CLID of incoming calls. > > > > > > Do you mean too high? Alkaline is 1.5V. Lithiums are 1.8V, 3.2V, 3,7V and perhaps 4.1V. > > No I mean too low to take for example 2x AAA NiMH (like the handsets). > > I did consider a lithium rechargeable 3.2v AAA and a piece of copper as > > a spacer. > I am sure they can make AAA Lithium, if there is a market. The proposed CATL 4.1V is almost half of some 9V devices (e.g. multi-meters). > > > I use rechargeable 3.7V Li with divider (to burn half of the energy) to run a 1.5V clock. > > That seems like a waste! I use spent for high current applications > > primary cells up in clocks and LCD based consumer devices. > I got hundreds of 30% to 50% 18650s. Not a waste if i would otherwise waste them. I put a bunch of them in parallel and just recharge them occasionally.
I think CATV will make 4680 cells first, but i want to order 420 Li cells, estimates: 420 cells: 250mAhr 4.2V, 1whr, 0.64oz 420 bricks: 250mAhr 420V, 0.1kwhr, 4 pounds, 8x12, 32mm x 48mm x 20mm, 1.28"x1.92"x0.8" We plug 300x 420 bricks (1200 pounds) directly into the EV power chain.
On Wednesday, November 16, 2022 at 7:27:17 AM UTC-8, Martin Brown wrote:
> On 16/11/2022 12:54, Ed Lee wrote: > > On Wednesday, November 16, 2022 at 1:34:44 AM UTC-8, Martin Brown wrote: > > ... > >>>> What matters is what makes voltage of Lithium AA cell to be reduced to 1.8V ? > >>>> > >>>> "It is unfortunate that many devices prefer to use AAA cells instead of AA cells, as AA cells can offer about 2.4x the amount of energy of an AAA cell and often comes at a similar price. > >>>> > >>>> The ais bove comment makes no sense since size of cells must match the size of battery compartment, so there is no room for 3 x AA cells in > >>>> case of small devices proving room for 3 x AAA smaller cells. > > >> Oh I think he has a very valid point. My desktop phone base station has > >> a 20cm square footprint consumes and 2x AAA per month. It won't work at > >> all on rechargables because their voltage isn't high enough to bias the > >> LCD screen which displays the CLID of incoming calls. > > > > Do you mean too high? Alkaline is 1.5V. Lithiums are 1.8V, 3.2V, 3,7V and perhaps 4.1V. > No I mean too low to take for example 2x AAA NiMH (like the handsets). > I did consider a lithium rechargeable 3.2v AAA and a piece of copper as > a spacer.
Here is a 1.5V 5Ahr Lithium AAA. Perhaps they have mini Golden Gate Bridge for sale as well. https://www.aliexpress.us/item/3256802541942917.html
> Here is a 1.5V 5Ahr Lithium AAA. Perhaps they have mini Golden Gate Bridge for sale as well. >
individual lithium cells come with USB port https://ae01.alicdn.com/kf/Hd25fcd2ea67a4e4aabac63ee1a58c5ea8.jpg what makes lithium chemistry to switch from 3.7V to 1.5V ? step down converter ?
On Wednesday, November 16, 2022 at 12:17:22 PM UTC-8, a a wrote:
> > Here is a 1.5V 5Ahr Lithium AAA. Perhaps they have mini Golden Gate Bridge for sale as well. > > > individual lithium cells come with USB port > > https://ae01.alicdn.com/kf/Hd25fcd2ea67a4e4aabac63ee1a58c5ea8.jpg > > what makes lithium chemistry to switch from 3.7V to 1.5V ? > > step down converter ?
Imagination. A hint is the identical power capacity of their AA and AAA at super high 5.5Ahr. I would be happy to have 1Ahr @4.2V (nominal, not peak). Someone was hinting at that, but of course without any data or links to back it up.