N battery size
12 × 30.2 mm
1.5 V · Alkaline · Cylindrical · also sold as LR1, E90, Lady
About the N
A short 1.5 V cell about two thirds the length of an AA, used in some door sensors, medical devices and older camera accessories.
The numbers
| Diameter | 12 mm · 0.47 in |
| Height | 30.2 mm · 1.19 in |
| Nominal voltage | 1.5 V |
| Chemistry | Alkaline |
| Other names | LR1, E90, Lady |
Other cylindrical sizes
| Cell | Size | Voltage |
|---|---|---|
| AAA | 10.5 × 44.5 mm | 1.5 V |
| AA | 14.5 × 50.5 mm | 1.5 V |
| C | 26.2 × 50 mm | 1.5 V |
| D | 34.2 × 61.5 mm | 1.5 V |
| AAAA | 8.3 × 42.5 mm | 1.5 V |
| A23 | 10.3 × 28.5 mm | 12 V |
| CR123A | 17 × 34.5 mm | 3 V |
| 18650 | 18 × 65 mm | 3.7 V |
| 21700 | 21 × 70 mm | 3.7 V |
Frequently asked questions
What size is a N battery?
12 mm across and 30.2 mm long — 0.47 × 1.19 inches.
What voltage is a N?
1.5 V (Alkaline).
What is another name for a N?
LR1, E90, Lady — all the same cell.
Is the N rechargeable?
Not in this chemistry. Alkaline cells of this size are single-use; recharging one is a fire risk rather than a saving.