NOVELTY - Battery system comprises, in combination: a first adaptor (20) including a first adaptor recess having at least one wall and a base, where the first adaptor recess is located in a portion of the first adaptor that has a geometric shape corresponding to the geometric shape of a first dedicated battery of a first portable electronic device; a universal battery removably receivable into the first adaptor recess; and a second adaptor including a second adaptor recess.    USE - The battery system is useful for portable electronic devices.    ADVANTAGE - The battery system provides more cost-effective and convenient portable electronic devices for replacement batteries.    DETAILED DESCRIPTION - Battery system comprises, in combination: a first adaptor (20) including a first adaptor recess having at least one wall and a base, where the first adaptor recess is located in a portion of the first adaptor that has a geometric shape corresponding to the geometric shape of a first dedicated battery of a first portable electronic device, and, upon removal of the first dedicated battery from the first portable electronic device, the first adaptor is configured to be removably received by the first electronic portable device; a universal battery removably receivable into the first adaptor recess, where the universal battery includes at least one battery contact and the universal battery is sized to a depth substantially equivalent to a depth of the walls of the first adaptor recess; and a second adaptor including a second adaptor recess having at least one wall and a base. A portion of a surface of the universal battery is substantially adjacent to a portion of a surface of the first adaptor when the universal battery engages the first adaptor recess. At least one of the walls of the first adaptor recess is configured with at least one first electrical contact corresponding to the battery contacts of the universal battery, where a portion of the first adaptor has at least one second electrical contact corresponding to at least one device electrical contact of the first portable electronic device, where the first adaptor electrical contact is in communication with at least one of the second adaptor electronic contacts. The first adaptor, in cooperation with the universal battery received into the first adaptor recess, is operable to power the first electronic portable device when the first adaptor is received by the first electronic portable device, where the battery system is adapted to replace the first dedicated battery associated with the first portable electronic device. The second adaptor recess is located in a portion of the second adaptor, the second adaptor recess has a depth substantially equivalent to the depth of the universal battery, the second adaptor recess configured to removably receive the universal battery, and second adaptor having a geometric shape corresponding to the geometric shape of a second dedicated battery of a second portable electronic device, where, upon removal of the second dedicated battery from the second portable electronic device, the second adaptor is configured to be removably received by the second electronic portable device, where a portion of a surface of the universal battery is substantially adjacent to a portion of a surface of the second adaptor when the universal battery engages the second adaptor recess, where at least one of the walls of second adaptor recess is configured with at least one third electrical contact corresponding to the battery contacts of the universal battery, where a portion of the second adaptor has at least one fourth adaptor electrical contact corresponding to at least one device electrical contact of the second portable electronic device, where the third adaptor electrical contact of the second adaptor is in communication with at least one of the fourth adaptor electronic contacts of the second adaptor, where the second adaptor, in cooperation with the universal battery received into the second adaptor recess, is operable to power the second electronic portable device when the second adaptor is received by the second electronic portable device and where the battery system is adapted to replace the second dedicated battery associated with the second portable electronic device. An INDEPENDENT CLAIM is also included for an adaptor kit (100) configured for use with multiple portable electronic devices, comprising in combination: multiple adaptors, each of the multiple adaptors having a recess located in a portion of each of the multiple adaptors, where the recess has at least one wall and a base, walls are sized to a depth to selectively receive a universal battery, and a portion of a surface of the universal battery is substantially adjacent to a portion of a surface of one of the multiple adaptors when the universal battery engages the recess; at least one of the walls including at least one first electrical contact corresponding to at least one battery contact of the universal battery; and a portion of each of the multiple adaptors having at least one second electrical contact corresponding to at least one electrical contact of a portable electronic device, where the electronic portable device is powered when the universal battery is received in the recess, the first electrical contacts are in communication with the second electrical contacts, each one of the multiple adaptors is adapted to replace a dedicated battery system associated with one of the multiple portable electronic devices and the multiple adaptors are located in a package (90) suitable for displaying the multiple adaptors.    DESCRIPTION OF DRAWING(S) - The figure shows a front perspective view of a kit comprising a universal battery and a multiplicity of adaptors configured to receive at least one of the universal batteries located in a package suitable for sale to consumers.    Battery (10)    Adaptor (20)    Package (90)    Instructional materials (92)    Kit (100)