What is equivalent to a ICR14500?

14500 Li-ion, ICR14500, INR14500 — all the same 3.6 V cell under different manufacturer codes.

Can I use a AA / LR6 instead of a ICR14500?

The same shape and size as an AA, and more than twice the voltage. This is the single most consequential size collision in consumer batteries: a 14500 fitted to a device expecting 1.5 V applies 4.2 V straight off the charger. Only fit one where the manufacturer explicitly lists 14500 support.

Is the ICR14500 rechargeable?

Yes. Use a charger made for its chemistry and never substitute a primary cell of the same size.

ICR14500 battery

What replaces a ICR14500

14500 Li-ion, ICR14500, INR14500

3.6 V lithium-ion (rechargeable), 14 × 50 mm (diameter × height)

The ICR14500 is a rechargeable 3.6 V lithium-ion (rechargeable) cylindrical. The codes below are the same physical cell sold under different manufacturer names, and any of them will fit.

Specification

IEC designation: ICR14500
Nominal voltage: 3.6 V
Chemistry: Lithium-ion (rechargeable)
Size: 14 × 50 mm (diameter × height)
Typical capacity: 800 mAh
Rechargeable: Yes

Codes that mean the same battery

Different manufacturers, one physical battery. Voltage, chemistry and dimensions all match.
Code	Fits?
14500 Li-ion	Yes — same cell
ICR14500	Yes — same cell
INR14500	Yes — same cell

Codes that look close but are not

Code	Why it is not a substitute
AA / LR6	The same shape and size as an AA, and more than twice the voltage. This is the single most consequential size collision in consumer batteries: a 14500 fitted to a device expecting 1.5 V applies 4.2 V straight off the charger. Only fit one where the manufacturer explicitly lists 14500 support.
NiMH AA	Also rechargeable and the same size, but 1.2 V. NiMH is the safe AA substitute; 14500 is not.

Where it turns up

Torches that explicitly support 3.7 V AA-size cells
Vape devices and small e-cigs
Some RC transmitters and models
DIY electronics projects

Genuine capacity runs 700–1000 mAh — well under an alkaline AA in milliamp-hours, though at more than twice the voltage the energy is comparable.

Common questions

What is equivalent to a ICR14500?: 14500 Li-ion, ICR14500, INR14500 — all the same 3.6 V cell under different manufacturer codes.
Can I use a AA / LR6 instead of a ICR14500?: The same shape and size as an AA, and more than twice the voltage. This is the single most consequential size collision in consumer batteries: a 14500 fitted to a device expecting 1.5 V applies 4.2 V straight off the charger. Only fit one where the manufacturer explicitly lists 14500 support.
Is the ICR14500 rechargeable?: Yes. Use a charger made for its chemistry and never substitute a primary cell of the same size.

LR6 battery 1.5 V alkaline
LR03 battery 1.5 V alkaline
ICR18650 battery 3.6 V lithium-ion (rechargeable)
LR20 battery 1.5 V alkaline
HR6 battery 1.2 V nickel-metal hydride
LR14 battery 1.5 V alkaline
CR17345 battery 3 V lithium (primary)
HR03 battery 1.2 V nickel-metal hydride
8LR932 battery 12 V alkaline
FR6 battery 1.5 V lithium (primary)
INR21700 battery 3.6 V lithium-ion (rechargeable)
4LR44 battery 6 V alkaline

Sources

Typical range compiled from manufacturer specifications — At One Place

How these figures are compiled and checked