D Batteries

Tags: aaa, d batteries, rechargeable cell battery, standardized by ansi

D Batteries

D Batteries

A D-cell battery is but one of many types of electrochemical cells, ranging from the smallest AAA type to AA, C, and finally the largest of those, the D batteries.

A D-cell is cylindrical in appearance and will have with electrical contacts showing at each end. You can always know the positive side of a D-cell battery by the fact that it has a bump or nub at that end.

ANSI, headquartered in Washington D.C. but operating out of New York City, which is the American National Standards Institute, is a very worthy totally private as well as non-profit organization whose task it is to oversee the development of completely voluntary consensus standards for personnel, systems, processes, services as well as products in the United States.

It further engages in the coordination of U.S. standards with known international standards so that American products will be used worldwide which allows you to find camera batteries worldwide for your U.S. camera.

Thus it should come as no surprise that D batteries were standardized by ANSI. The international appellation for a D cell that we in the United States, through ANSI, call a 13A (for alkaline) battery, is LR20 (alkaline). Our D is constructed on its carbon-zinc chemistry.

If you look closely at D batteries, you’ll see that it is sold as a heavy-duty cell since it will be used for higher-current drain applications. This means that D cells are sold for use in applications that run for an extended amount of time.

Examples include, among many others, safety systems, products having motors, portable entertainment systems, radio transmitters and receivers, and of course large flashlights such as used in the police departments.

In actuality, D batteries are called dry cells. A battery is made up of a single chamber, or sometimes it has been packed with an electrolyte paste as well as an electrode rod.

A single use D cell battery has the nominal output voltage of 1.5 volts Rechargeable cell batteries, known as NiCd and NiMH have a nominal voltage of 1.2 volts. Interestingly enough the terminal voltage of a D cell battery is the same as a C, AA, or AAA but they can store additional energy and thus can supply current longer.

Battery capacity is measured in mAh. These letters, mAh stand for Milliamp Hour, a technical term that has been given to discuss exactly how much power a certain battery will hold.

Thus if you desire you may see the differences in capacity of each kind of battery without thoroughly understanding mAh. For instance, a AA battery has an mAh capacity of 2,400, a C battery has an mAh capacity of 7,800 mAh, but a D battery has an mAh capacity of 12,000!

It is recommended that whenever replacing D batteries in any power draining application that all the batteries have matching mAh values. Or else, it is likely that one lesser mAh battery may drain before the others, which will cause extra strain upon the remaining batteries.

Here's D Batteries Selections:

Duracell Batteries, D Size, 8-Count Packages (Pack...	Customer Review: What can one say about batteries? They worked very well! This was a great deal, and I would not hesitate to buy these again! A+++++... Read More	(7)
Nikon EN-EL3e Rechargeable Li-Ion Battery for D200...	Customer Review: EN- EL3e will disappoint you. They are not covered under any warranty and you will lose your pictures when it goes out.I purchase mine 6 months ago and it failed. Original batteries last 4 years. The upgrade (EN-EL3e) only last me 6 months.Nikon does... Read More	(233)
DURACELL D12 PROCELL Professional Alkaline Battery...	Customer Review: Batteries didn't even last a week in my newborn's swing. Plus I have two trail cameras that take 6 D batteries each and it's lucky if I i got 200 pictures off them before I had to change the batteries out. The batteries before these I could get over ... Read More	$19.68 (8)
7200mAh 9 cell battery for Dell Latitude D620 D630...	Customer Review: Comes in new packaging. Gives me 3-4hrs on a full charge. Great battery so far.... Read More	(32)
Rayovac ALD-12 UltraPRO Alkaline D Batteries, 12-P...	Customer Review: After a recent evening power outage that lasted several hours, I decided to better prepare myself by purchasing some backup lighting. Along with three of these Dorcy 41-1016 Indoor/Outdoor Table Lamp, Colors May Vary I purchased a 12-pack of the D b... Read More	$14.16 (7)