Battery Basics

Here we will discuss the basics of battery theory!

D battery with 1.5V voltage, 34.2 mm diameter and 61.5 mm length, showing standard D battery dimensions and specifications

D battery dimensions, Capacity, Voltage, Use, power and Performance

David / August 26, 2026

D battery Dimensions A D battery is a large cylindrical battery measuring approximately 34.2 mm (1.35 in) in diameter and 61.5 […]

AA battery size: Infographic featuring four unbranded gold and black AA batteries with 1.5V voltage, 50.5 mm × 14.5 mm dimensions, alkaline chemistry, 2000–3000 mAh typical capacity, and common uses including cameras, flashlights, game controllers, wireless mice, and remote controls.

Understanding AA Battery: AA Battery Size, Voltage, capacity, power and performance

David / August 1, 2026

What exactly the AA battery size, AA battery diameter and dimensions of an AA size battery? An AA battery is

AAA battery voltage: Infographic showing four unbranded AAA batteries with 1.5V voltage, 44.5 mm × 10.5 mm dimensions, alkaline chemistry, typical capacity of 1000–1250 mAh, and common household applications.

AAA Battery: AAA battery voltage, Capacity, Size, Power and performance

David / July 29, 2026

AAA Battery Voltage: A standard alkaline AAA battery has a nominal voltage of 1.5 V, while a rechargeable NiMH AAA battery