D Cell Battery Size and Voltage
D (単1形) = 34.2 mm diameter x 61.5 mm height, 1.5 V. IEC R20/LR20, ANSI 13, ~18000 mAh.
Open the interactive Standards & Sizes tool →Key facts
| Diameter x height | 34.2 x 61.5 mm |
|---|---|
| Voltage | 1.5 V |
| IEC code | R20 / LR20 |
| ANSI code | 13 |
| Capacity | ≈ 18000 mAh (alkaline) |
Frequently asked questions
What size is a D battery?
A D cell is 34.2 mm in diameter and 61.5 mm tall, rated 1.5 V.
What is D battery's IEC code?
D is IEC R20 (zinc) or LR20 (alkaline); ANSI calls it size 13.
Related pages
D Battery Size is part of Standards & Sizes on GOAT Lab — a free reference you can use without signing up, and it works offline. Open the tool above for any custom value.
Part of GOAT Lab — 26 free, browser-based science, engineering and developer tools. No sign-up.