Side-by-Side Comparison
Cylindrical Cells
AA Battery vs. AAAA
Comparing 2 standards across 6 specifications. 6 key differences identified.
Comparing:
AA Battery
AAAA
A standard AA battery measures 14.5mm in diameter and 50.5mm in length. Primary Alkaline cells output 1.5V, NiMH rechargeable cells output 1.2V. Inserting a 3.6V 14500 Li-ion cell into 1.5V AA devices destroys the circuit.
A AAAA battery (IEC designation LR8D425) is a 1.5V Alkaline cell measuring approximately 8.3mm in diameter and 42.5mm in length -- smaller than a AAA. It's used in devices with especially tight internal space, such as laser pointers, some styluses, and compact LED penlights.
Specification Comparison Table
6 Parameters| Parameter / Spec | ||
|---|---|---|
|
Diameter
|
14.50 mm | 8.30 mm |
|
Overall Length
|
50.50 mm | 42.50 mm |
|
Alkaline Voltage
|
1.50 V | — |
|
Nominal Operating Voltage
|
— | 1.50 V |
|
Chemistry
|
— | Alkaline |
|
Nominal Capacity (at 10mA)
|
— | ~625 mAh |