D battery

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D batteries are a battery typically used in high drain applications like products with motors, motion, heat, cars, or requiring extended run time.

The D battery type was standardized by ANSI as "13A" (alkaline) and is known internationally as LR20 (alkaline) or 13D (carbon-zinc).

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[edit] Introduction

A Duracell D battery in a battery holder.
A Duracell D battery in a battery holder.

D sized batteries are composed of a single chamber and are more correctly referred to as a cell. The normal output voltage of single-used D batteries is 1.50 volts, while NiCd and NiMH rechargeable batteries have a nominal voltage of 1.20 V. Specialty batteries based on more unusual chemistries can run at a voltage as high as 1.6 V under load. The voltage of a D battery is the same as an AAA, AA or C cell, however, they can supply current longer, i.e. they store more energy, than C batteries.

[edit] Capacity

Because of their larger size, which allows them to store a more powerful and greater mass of anode material (an electrode that is consumed as it does electrical work), the D sized battery can supply power for a longer time than other batteries.

Most brands of rechargeable D batteries have significantly less capacity (as low as 1,800 mAh) than the disposable kind. Internally, these cells contain a AA cell, packaged in a D sized casing.[citation needed]

Battery type Capacity in mAh
AA 2,400
C 7,800
D 12,000

[edit] See also

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