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An energy storage system comprising at least one energy storage module adapted to supply electrical energy to a hybrid vehicle. The energy storage module comprises an enclosure, at least one battery array located within the enclosure, and an energy storage controller module located within the enclos

An energy storage system comprising at least one energy storage module adapted to supply electrical energy to a hybrid vehicle. The energy storage module comprises an enclosure, at least one battery array located within the enclosure, and an energy storage controller module located within the enclosure and electrically connected to the battery array. A high voltage junction box is attached to a first end of the enclosure and having a plurality of high voltage connection terminals connected by a plug-in bussed electrical center configured to reduce the possibility of unintentional grounding or shorting, and decreases the safety risk to a technician during servicing. At least one of the high voltage connection terminals is configured to receive a high voltage conductor connected between the energy storage module and an inverter of the hybrid vehicle.

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1. An energy storage system, comprising: an energy storage module having a potential difference of at least 300 volts adapted to supply electrical energy to a hybrid vehicle, the energy storage module including a primary enclosure;a battery array located within the primary enclosure, the battery arr

1. An energy storage system, comprising: an energy storage module having a potential difference of at least 300 volts adapted to supply electrical energy to a hybrid vehicle, the energy storage module including a primary enclosure;a battery array located within the primary enclosure, the battery array having a plurality of battery cells;a high-voltage junction box mounted to the primary enclosure, the high-voltage junction box including at least one internal terminal electrically connected to the battery array by a plurality of internal high-voltage conductors, the high-voltage junction box also having at least one external terminal configured to electrically connect to at least one external high-voltage conductor; anda plug-in bussed electrical center formed of electrically insulative material and mounted in the high-voltage junction box, the plug-in bussed electrical center also having: one or more high-voltage contactors;at least one internal terminal connector rigidly extending away from the plug-in bussed electrical center and configured to electrically connect to the corresponding at least one internal terminal in the high-voltage junction box; andat least one external terminal connector rigidly extending away from the plug-in bussed electrical center and configured to electrically connect to the corresponding at least one external terminal in the high-voltage junction box;wherein the plug-in bussed electrical center is configured to electrically connect one or more of the internal terminal connectors with one or more of the external terminal connectors using the one or more high-voltage contactors. 2. The energy storage system of claim 1 wherein the at least one internal terminal is adapted to receive the corresponding at least one internal terminal connector, and the at least one external terminal is adapted to receive the at least one external terminal connector. 3. The energy storage system of claim 1 wherein the at least one internal terminal connector and the at least one external terminal connector are bus bar blade connectors. 4. The energy storage system of claim 1 wherein the plug-in bussed electrical center further comprises a current sensor. 5. The energy storage system of claim 4 wherein the plug-in bussed electrical center further comprises a current sensor connector which is electrically connected to the current sensor. 6. The energy storage system of claim 1 wherein the plug-in bussed electrical center further comprises a fuse. 7. The energy storage system of claim 1 wherein the plug-in bussed electrical center further comprises a high voltage sense connector. 8. The energy storage system of claim 1 wherein the plug-in bussed electrical center further comprises a low voltage connector. 9. A plug-in bussed electrical center for use in a hybrid vehicle, comprising: a connector formed of electrically insulative material having a plurality of internal terminal connectors and a plurality of external terminal connectors; anda plurality of high voltage contactors configured to electrically connect one or more of the internal terminal connectors with one or more of the external terminal connectors;wherein the plurality of internal terminal connectors are configured to electrically connect to one or more corresponding internal terminals in a high-voltage junction box, and the plurality of external terminal connectors are configured to electrically connect to one or more corresponding external terminals in the high-voltage junction box;wherein one or more of the internal terminal connectors, and one or more of the external terminal connectors rigidly extend away from the connector;wherein the internal terminals are electrically connected to a first battery array having a plurality of battery cells, andwherein the external terminals are electrically connected to an energy storage system for a hybrid vehicle drive system, the battery array having a potential difference of at least 300 volts. 10. The plug-in bussed electrical center of claim 9 wherein at least one of the corresponding internal terminals are adapted to receive at least one of the internal terminal connectors, and at least one of the corresponding external terminals are adapted to receive at least one of the external terminal connectors. 11. The plug-in bussed electrical center of claim 9 wherein at least one of the internal terminal connectors and at least one of the external terminal connectors are bus bar blade connectors. 12. The plug-in bussed electrical center of claim 9 further comprising a current sensor. 13. The plug-in bussed electrical center of claim 12 further comprising a current sensor connector which is electrically connected to the current sensor. 14. The plug-in bussed electrical center of claim 9 further comprising a fuse. 15. The plug-in bussed electrical center of claim 9 further comprising a high voltage sense connector. 16. The plug-in bussed electrical center of claim 9 further comprising a low voltage connector. 17. The energy storage system of claim 1 wherein the energy storage system has two or more energy storage modules electrically connected to the energy storage system in parallel. 18. The energy storage system of claim 1 wherein the energy storage system has two or more energy storage modules electrically connected to the energy storage system in series. 19. The plug-in bussed electrical center of claim 9 wherein the energy storage system includes a second battery array having a plurality of battery cells, the second battery array electrically connected to the first battery array in parallel. 20. The plug-in bussed electrical center of claim 9 wherein the energy storage system includes a second battery array having a plurality of battery cells, the second battery array electrically connected to the first battery array in series.