![]() The diameter ranges from approximately from 33.0 mm to 34.20 mm. The standard size of a D battery has an approximate length that ranges from 58.0 to 61.50 mm. Lithium, Zinc Carbon, Alkaline, and LiFeS2 have the same nominal voltage of 1.5V. ![]() This has higher charge capacity that ranges from 2200 to 12000 mAh while the typical energy ranges from 2.75 to 15 Wh. IEC’s HR20 is the technical name for the NiMH D-size battery. Its typical charge capacity is 2000 – 5500 mAh with an energy capacity of 2.5-6.9 Wh. NiCad D cell is named as KR20 by the IEC. Lithium Iron Disulfide (LiFeS2) also got the names FR20 (IEC) and 13LF (ANSI). Its typical charge capacity ranges from 12000 – 18000 mAh with the typical energy charge of 18-27 Wh, which is greater than the Zinc Carbon variant. The Alkaline chemistry has its IEC name as LR20 and 13A as its ANSI/NEDA name. Nickel Metal Hydride (NiMH) and Nickel Cadmium (NiCad) are the rechargeable batteries with nominal voltages and other characteristics that are pre-determined by their specific battery chemistry.īATTERY CHEMISTRY AND TECHNICAL DIFFERENCESĪ Zinc Carbon D battery is technically known as R20 based on IEC standard and 13D for ANSI/NEDA name, with 8000 mAh charge capacity and 12 Wh typical energy capacity. Lithium and Alkaline batteries have their rechargeable variants, as in the case of RAMs and Lithium-ion or the rechargeable Lithium. Of these chemistries, Zinc Carbon and LiFeS2 are the only ones that are purely disposable cells. Primary batteries can be either made of Alkaline, Lithium, Zinc Carbon, or Lithium Iron Disulfide (LiFeS2). D batteries are mostly used in high drain applications such as flashlights, automatic odoriser, paper towel dispensers, transmitters, radio receivers, and other devices with extended running time requirement. D cells were originally known as flashlight batteries. The D-size battery is a dry cell that is cylindrical in shape with electrical contacts at both ends. These cells come as both primary batteries and rechargeable types. These are also larger than the C dry cells. Many commonly available size D rechargeable cells are actually sub-C cells in a D-sized holder.D-size or D batteries are quite bigger than the AAA or AA batteries. This effect is generally less pronounced in cells with NiMH chemistry and hardly at all with NiCd. Duracell brand rates its alkaline D cell performance as approximately 20,000 mAh at 25 mA draw, but about 10,000 mAh at 500 mA draw. Names Common Name / Type of this batteryĪ battery's capacity depends upon its cell chemistry and current draw. The overall length is 61.5 millimeters (2.42 inches). ĭ, C, AA, AAA, AAAA and 9-Volt batteries Dimensions and capacity ĭ batteries have nominal diameter of 33.2 ± 1 millimeters (1.3 inches). ![]() In 2008, Swiss purchases of D batteries amounted to 3.4% of primary and 1.4% of secondary (rechargeable) sales. In 2007, D batteries accounted for 8% of alkaline primary battery sales (numerically) in the US. Navy, leading to confusion with the smaller C cell battery (BA-42). During World War II, it was designated the Type C battery by the U.S. military designation for this battery has been BA-30 since sometime before World War II. Before smaller cells became more common, D cells were widely known as flashlight batteries. The National Carbon Company introduced the first D cell in 1898. Its terminal voltage and capacity depend upon its cell chemistry. A D cell may be either rechargeable or non-rechargeable. D cells are typically used in high current drain applications, such as in large flashlights, radio receivers, and transmitters, and other devices that require an extended running time. A D cell is cylindrical with an electrical contact at each end the positive end has a nub or bump. D cell batteries, wooden matchstick for scale.Ī D battery ( D cell or IEC R20) is a standardized size of a dry cell. ![]()
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