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

26650 vs. AAA Battery

Comparing 2 standards across 4 specifications. 4 key differences identified.

Comparing:
26650
AAA Battery

A 26650 Li-ion cell measures 26mm in diameter and 65mm in length, used in high-drain devices like flashlights, power tools, and RC-hobby battery packs. The format is produced in multiple chemistries with different nominal voltages, so '26650' alone does not guarantee a specific voltage.

View full 26650 spec sheet →

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 →

Specification Comparison Table

4 Parameters
Parameter / Spec
Diameter
26.00 mm 10.50 mm
Overall Length
65.00 mm 44.50 mm
Chemistry
Lithium-ion (Li-ion or LiFePO4, varies by product)
Alkaline Voltage
1.50 V