Dimensions and Capacity
| Zinc–carbon | Alkaline | Li-FeS2 | NiCd | NiMH | |
|---|---|---|---|---|---|
| IEC name | R20 | LR20 | FR20 | KR20 | HR20 |
| ANSI/NEDA name | 13D | 13A | 13LF | ||
| Typical capacity | 8000 mAh | 12000-18000 mAh | 2000-5500 mAh | 2200–12000 mAh | |
| Nominal voltage | 1.5 V | 1.5 V | 1.5 V | 1.25 V | 1.25 V |
| Rechargeable | No | Special type only | No | Yes | Yes |
Capacity varies depending on cell chemistry. In some cases rechargeable cells are made to fit a D cell holder but with capacity as for a smaller physical size. In fact, most commonly available size D rechargeable batteries are actually AA batteries in a D-sized holder.
D batteries have:
Nominal diameter of 33.2 ± 1 millimeters (1.3 inches).
Overall length of 61.5 millimeters (2.42 inches).
Read more about this topic: D Battery
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