Patent ID: 6781580
Filing Date: 2004-08-24
Classification: G06F,G09G,H01M,Y02E

Abstract:
An electronic shelf label (ESL) comprising:a display for displaying information; memory circuitry for storing the information displayed and an ESL identification number; second memory circuitry for storing battery change instructions; a first battery compartment; a battery in the first battery compartment; a second battery compartment electrically connected in parallel with the first battery compartment; a battery cover sized to cover only one of the battery compartments; ESL circuitry in the ESL for determining that the battery should be replaced; and a switch coupled to the ESL circuitry for detecting removal of the ESL from a mounting; wherein the ESL circuitry causes the display to display a battery change instruction if the ESL circuitry determines that the battery should be replaced and the switch detects removal of the ESL from the mounting.