What is an AA cell capacity?

[JohnD]

Might be because big ones can overheat.

 

[SUNRAY]

Poundland also do Kodak zinc batteries - not sure if zinc-carbon or zinc-chloride

I haven't seen Zinc Kodaks in Poundland for several years now, all I've seen are Kodak Alkalines

 

[CountryFan]

I haven't seen Zinc Kodaks in Poundland for several years now, all I've seen are Kodak Alkalines

Have you considered an online retailer, such as Amazon?

 

[SUNRAY]

Have you considered an online retailer, such as Amazon?

Not for something like a pack of batteries,

 

[CountryFan]

Not for something like a pack of batteries,

Just an idea if you were struggling. Just found The works a bookshop - they have stores in Kent too.

 

[denso13]

Just an idea if you were struggling. Just found The works a bookshop - they have stores in Kent too.

Those are the ones I get from B&M.

 

[Deryck Tintagel]

I haven't seen Zinc Kodaks in Poundland for several years now, all I've seen are Kodak Alkalines

I have not been in-store for a month or so, but checked online. I think I have bought these for the wife recently

 

[SUNRAY]

I have not been in-store for a month or so, but checked online. I think I have bought these for the wife recently

View attachment 425367

likewise I don't get there regularly but for the last few visits my store have only had the alkaline version

 

[SUNRAY]

Just an idea if you were struggling. Just found The works a bookshop - they have stores in Kent too.

Thanks, I'll be in town tomorrow.

 

[ebee]

I think that if we all begin with the premise that the stated comparisons all depend within confined examples otherwise we might compare apples with oranges and therefore mislead ourselves.

Even lamp (light bulb) manufacturers do this with life expectancy.
XXX thosand hours stated is dependant on use and frequency of switching most traditional lamps (filament, fluorescent. tungsten halogen etc did not enjoy short intervals of On/off periods so much as 3 hour periods or continuous use.

I used to say (a bit tongue in cheeck really) If you never switch a light on it will last for ever, if you switch a light on and leave it on for 3 hours or more then when you switch it off and leave it off for 3 hours or more then it will usually have a reasonably long life, if you switch on off on off a few times for a scond or two then it will die very young.

If you have for example a bathroom light etc, especially if fluorescent, and you want to switch it off, first consider if it is likely to be switched on again in the next 20 mins then leave it switched on.

A friend of mine had a shop premises for his small business with lots of fluoros, first man in around 07:30 switch all the lights on, last man out at 6:00 to 7:30pm switched them off for the day, they last for years and years.
Similar businesses who had an hour break for lunch and switched off for lunch had several changes of the whole lot whist he was on the same set of lamps.

 

[fixitflav]

there can't really be a baseline ( a mAh capacity) for alkaline batteries as they are very load dependant, half the load and the same battery may last 3 or 4x longer.

Couldn't capacity be quoted at a specified current draw?

 

[fixitflav]

The rechargeable are economical, but I have to change them much more often.

I have AA rechargeables in a magnifier and they've been OK for several years

 

[JohnD]

Couldn't capacity be quoted at a specified current draw?

The "which" report tabulates their relative performance at high, low and medium current devices, and I look for the best value of the appropriate type. I don't think they specify the test current.

In my radios, they mostly last a matter of weeks, so I use rechargeable.

In clocks, alkaline last for years.

Cameras have high draw, so come with Lithium rechargeable, and I formerly used Lithium single-use.

My torches are hardly ever required, so I put alkaline in them, which have a shelf life of ten years or so.

 

[SUNRAY]

I think that if we all begin with the premise that the stated comparisons all depend within confined examples otherwise we might compare apples with oranges and therefore mislead ourselves.

Even lamp (light bulb) manufacturers do this with life expectancy.
XXX thosand hours stated is dependant on use and frequency of switching most traditional lamps (filament, fluorescent. tungsten halogen etc did not enjoy short intervals of On/off periods so much as 3 hour periods or continuous use.

I used to say (a bit tongue in cheeck really) If you never switch a light on it will last for ever, if you switch a light on and leave it on for 3 hours or more then when you switch it off and leave it off for 3 hours or more then it will usually have a reasonably long life, if you switch on off on off a few times for a scond or two then it will die very young.

If you have for example a bathroom light etc, especially if fluorescent, and you want to switch it off, first consider if it is likely to be switched on again in the next 20 mins then leave it switched on.

A friend of mine had a shop premises for his small business with lots of fluoros, first man in around 07:30 switch all the lights on, last man out at 6:00 to 7:30pm switched them off for the day, they last for years and years.
Similar businesses who had an hour break for lunch and switched off for lunch had several changes of the whole lot whist he was on the same set of lamps.

And it hasn't got any better with the massive inrush of SMPS LED drivers

 

[morqthana]

I just want to know why lithium-iron cells are only available as AAA & AA - why not C, D, & PP3 as well?

Adapters to house 3xAA in a D enclosure and 4xAAA in a C are available.