Patent ID: 6879517

Claim:
A battery comprising: a. exactly four battery terminals; b. a rechargeable battery cell coupled to a first and a second battery terminals; c. protection circuitry coupled to the rechargeable battery cell; and d. a memory device comprising: i. a silicon die and memory circuitry; and ii. exactly three terminals, wherein each terminal comprises a single pin, wherein: 1. a first external terminal is coupled to a power node; 2. a second external terminal is coupled to a data communication node; and 3. a third external terminal is coupled to a ground node; iii. wherein the type of memory is selected from the group consisting of EPROMs and EEPROMs; wherein i. the first external terminal is coupled to a third battery terminal; ii. the second external terminal is coupled to a fourth battery terminal; and iii. the third external terminal is coupled to the second battery terminal.