What is the difference between an LR44 and AG13 battery?

PANASONIC LR44 AG13 A76 G13A 1.5V Alkaline Battery — JUST BATTERIES AUSTRALIA

Rayverstar LR44 AG13 1.5 Volt Alkaline (20-Batteries) Fits: A76, GPA76, L1154F, L1154, 357A, 157, 303, 357, SR44, SR44SW, EPX76, PX76, PX76A, Hexbug (Full List Below)

Pack of 5 units LR44 button-type alkaline batteries - Cablematic

Review & Save Money LR44 AG13 1.5V Alkaline Button Cell Batteries Watch,Clocks,Hearing Aids,Tester.

China Alkaline 1.5V AG13 LR44 Button Battery For LED Flashlight Suppliers & Manufacturers & Factory - Wholesale Price - WinPow

40PC AG13 LR44 1.5V Battery L1154 RW82 RW42 SR1154 SP76 A76 357A Button Cell Batteries Camera Remote Control battery - AliExpress

Alkaline button cell battery LR44 / AG13

10 x LR44 Battery Equivalent G13 G13A G13-A AG13 V13GA A76 GPA76 1.5V

MEDca 1.5V Alkaline Batteries - LR44 AG13 357 303 SR44 Battery - Button Coin Cell for Hearing Aids and Amplifiers, Toys, Remotes, Calculators, Lasers, Long Lasting Power, Anti Corrosion

AG13 Lr44 1.5V Alkaline Button Coin Cell Battery A76 AG13 for Watch/ LED/Lighting/Toys - China Lr44 AG13 and 1.5V Alkaline Coin Cell price

TONSY LR44 / AG13 / 357A / A76 / SR44 1.5v Button Cell - Pack Of 30 Battery - TONSY

AG13/Lr44 Alkaline Button Cell Dry Battery 1PATA (10PCS)