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

AAA Battery vs. AAAA

Comparing 2 standards across 6 specifications. 6 key differences identified.

Comparing:
AAA Battery
AAAA
AAA Battery →

A AAA battery (IEC designation LR03, ANSI 24A) measures 10.5mm in diameter and 44.5mm in length. Alkaline AAA cells output 1.5V nominal; NiMH rechargeable AAA cells output 1.2V. Typical alkaline capacity runs roughly 800 to 1,200 mAh depending on discharge rate.

View full AAA Battery spec sheet →
AAAA →

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

6 Parameters
Parameter / Spec
AAA Battery
AAAA
Diameter
10.50 mm 8.30 mm
Overall Length
44.50 mm 42.50 mm
Alkaline Voltage
1.50 V —
Nominal Operating Voltage
— 1.50 V
Chemistry
— Alkaline
Nominal Capacity (at 10mA)
— ~625 mAh

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