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Batteries - should they carry an indication of how powerful they are?
Rechargeable batteries usually carry an indication of how much power they can store, such as 1800mAh or 2300mAh.

Given that there are so many rubbish batteries on the market these days, do you think it would be useful if the manufacturers were made to display a rating of just how good/bad their batteries are?

It might be good for the environment - bad batteries contain nearly as much bad stuff as good batteries, but only last a tenth of the time.

It would certainly be good for the consumer - bad batteries might be cheap, but you have to replace them a lot.

And it might help to identify the suppliers of illegally badged copies - if you know brand X is supposed to last 10 hours and you only get 1, then you know that the retailer is selling cheap copies.
asked in batteries, life, cells

duffield1 answers:

Sounds like a great idea, not least because I get horribly confused between the 'basic-better-best' ranges of batteries. Which Duracells, for example, are supposed to last the longest? Or Ever Ready ones?

It would be good to have them rated by a central monitoring body, though - if not with actual power, an energy-efficient rating like fridges have would be good.

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seacommander answers:

It certainly would be usefull if the manufacturers of primary cells were required to indicate the capacity of their products. This sort of information can only reliably be found for the well established manufacturers.
I think Duracell used to produce a battery with an indicator along the edge that you pressed at either end and the length of the coloured bar that appeared was proportional to the supposed power remaining.
I'll try and see if I can find a picture of one.

Supplement from 11/20/2008 11:38am:

This link lists the capacities of some typical Duracell primary alkaline cells.

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sheps101 answers:

ban all batteries except reusable ones and we solve the problem

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Poindexter answers:

Caveat emptor. Personally I would favour much stricter labeling and product control, but I can guarantee you that if it were enforced, many voters would decry the "nanny state".
In the mean time you'll probably have to rely on Which?.

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