Guide to Choosing Between C and D Cell Batteries

2025-11-04

Selecting the right battery for your devices can be confusing, especially when distinguishing between C and D batteries. This guide provides a detailed comparison to help you make an informed decision.

1. Size Comparison: C vs. D Batteries

At first glance, C and D batteries may appear similar, but their dimensions differ significantly, affecting compatibility with devices.

C Battery Dimensions: 50.0 x 26.2 mm
D Battery Dimensions: 61.5 x 34.2 mm

D batteries are larger and thicker than C batteries. Always verify the required battery size for your device before purchasing.

2. Chemical Composition: Performance Matters

Both C and D batteries are available in various chemical compositions, each offering distinct performance characteristics.

Alkaline Batteries: Known for long life and stable performance, ideal for low-power devices.
Lithium-Ion Batteries: Higher energy density, suitable for high-drain devices, though more expensive.

3. Applications: Matching Batteries to Devices

Choosing the right battery ensures optimal device performance.

C Batteries: Commonly used in toys and small electronic devices with moderate power requirements.
D Batteries: Designed for high-drain devices like flashlights and portable radios, offering extended runtime.

4. Detailed Specifications of C Batteries

The table below outlines key parameters for various C battery types.

Chemical Type	Common Label	Rechargeable	Typical Capacity (Ah)	Nominal Voltage (V)
Zinc-Carbon	R14	No	2-4	1.5
Alkaline	LR14	No (Most)	6-8	1.5
Nickel-Cadmium	KR14	Yes	1.5-3	1.2
Nickel-Metal Hydride	HR14	Yes	4-6	1.2
Lithium Thionyl Chloride	ER 26500	No	7-9	3.6
Lithium Iron Disulfide	-	No	8-11	1.8 (1.5)
Lithium (with DC-DC converter)	-	Yes	2-4	1.5
Lithium (26500)	26500	Yes	3-6	3.2-3.7