Which Battery is bigger C or D?

The use of batteries is now seen everywhere in our life. From your smartphone, digital cameras to your car, you have different battery options for numerous purposes. Each consumer electronic device has its own set of requirements and specifications, and to fulfill that, types of batteries are introduced in different sizes, designs, and shapes.

When it comes to day-to-day life, you must have come across a C battery, and D battery as these are batteries that are mostly used in regular devices such as flashlights, electronic toys, motors, cameras, and alarms. Based on that, you must have wondered which battery is bigger, C or D, and you may also have a thought on what difference it actually has.

You are not alone in this, we all have been looking for answers, and this article is what is going to end your quest for the right answer. Continue reading this article as we explore C and D batteries, and which one has a bigger size. So, let’s start with type C first.

C batteries

Introducing batteries for portable devices, c battery is a type of dry cell battery and is mostly used in devices that require medium to high power consumption. The application of C batteries includes regular torch lights, cameras, alarms, radios, and toys.

When we say dry cell battery, you will think of AA and AAA batteries; however, the C battery has a bigger size and thus offers greater reliability and long battery life. When compared to the D battery, the C battery is smaller in size but greater than AA and AAA batteries.

C batteries dimensions

With a standard physical size, C batteries may have different capacities and voltage, though the nominal voltage is 1.5V for all. Talking about the diameter, C batteries have a diameter of 26.2mm or 1.03 inches. In contrast, the length of the C battery is 50mm or 1.97 inches.

Just like other batteries, C batteries are also differentiated based on the material and the chemical use. The most common variants you will see are alkaline C batteries and lithium C batteries.

When checking on the base of voltage, C batteries are available with different voltage ranges. Based on specific needs and requirements, you can choose the one that suits you best.

A 1.5V C battery is commonly used for household items such as radios, clocks, and remote controls. 3V C batteries are used mostly for smart gas meters, detectors, and monitoring devices. For applications that require high power, such as industrial equipment, measuring tools, and electronics, 3.6V C batteries are used.

C batteries are typically categorized into two; rechargeable and non-rechargeable. Both types have their own benefits and drawbacks, and it usually depends on the particular requirement of the applications that which one is most suitable.

Rechargeable batteries are, however, more popular because of their sustainability and the ability to recharge several times. Moreover, C batteries are made recyclable, though you have to take them to a recycling facility.
Let’s now explore the type D batteries.

D batteries

Cylindrical shape having an electrical point at each end, D batteries are used in a wide variety of applications. D batteries are appropriate for devices that require high power consumption over an extended period of time. From electric instruments, megaphones to radio receivers and transmitters, d batteries are best to supply power energy.

Also referred to as R20s, the D battery has a standard size having a diameter of 33.2 mm or 1.3 inches, and a length of 61.5 mm or 2.42 inches.

D batteries can be made of Alkaline, Zinc Carbon, or lithium. Same as C batteries, D batteries are also categorized with rechargeable and non-rechargeable facilities. You can use any type you want as per the need and requirement.

D batteries offer an advantage when it comes to providing long storage time and high energy. These batteries are also made environmentally friendly and require no or very little maintenance.

Which is the bigger C or D battery?

Though both types of batteries can supply the same voltage, the difference lies within the size, usability, and staying power.

When it comes to the actual size, the D battery is larger than the C battery and also bigger than the AA and AAA batteries.


As C and D batteries are largely used in everyday household items, it is crucial for you to know which battery is bigger or its actual size. Knowing the actual size of a battery helps you determine the suitable battery type for your application. For whatever reason it is, this article lets you know the size and as well as gives you a brief overview of each type. Get yourself informed and do share it with all so that we all know which battery size is appropriate for us to use.