# item.guide
Side-by-Side Comparison Cylindrical Cells

9V Battery vs. AAAA

Comparing 2 standards across 8 specifications. 8 key differences identified.

Comparing:
9V Battery
AAAA

A 9V battery (IEC designation 6LR61, commonly called PP3) is a rectangular battery measuring approximately 48.5mm x 26.5mm x 17.5mm with two snap terminals. Alkaline 9V cells output 9.0V nominal from six internal 1.5V cells in series, with typical capacity around 400-600 mAh.

View full 9V Battery spec sheet →

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.

View full AAAA spec sheet →

Specification Comparison Table

8 Parameters
Parameter / Spec
Nominal Operating Voltage
9.00 V 1.50 V
Height
48.50 mm
Width
26.50 mm
Depth
17.50 mm
Diameter
8.30 mm
Overall Length
42.50 mm
Chemistry
Alkaline
Nominal Capacity (at 10mA)
~625 mAh