
Why do large D cells have almost the same capacity as small AA batteries?
I need rechargeable batteries in size D and I have noticed that the large D cells from the usual battery manufacturers have almost the same capacity as the small AA batteries. Why is that? - Duracell D - 2200mAh - Duracell AA - 2500mAh - Energizer D - 2500mAh - Energizer AA - 2300mAh - Varta D - 3000mAh - Varta AA - 2600mAh That makes no sense at all... The large batteries have more than three times the volume of the small ones. Why do Duracell, Energizer and Varta make such bad D cells? Technically speaking, a higher capacity would be completely logical for a larger battery. And smaller manufacturers such as Ansmann and Voltcraft prove that it is possible, with D cells up to 10,000mAh.

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