A battery pack for a vehicle, comprising: a pack case forming an appearance of the battery pack, the pack case having a cell assembly having a plurality of secondary batteries, wherein the pack case further having end plates located at top and bottom portions of the cell assembly to support the cell assembly, wherein the end plates are made of metal and are connected into a single body by a long bolt member, wherein the cell assembly is interposed between the end plates in the single body; a BMS circuit boards provided in the pack case, the BMS circuit board having a discharge terminal, a data transmission terminal and a static electricity inducing pattern forming a conductor pattern of a predetermined form on the BMS circuit board, wherein the discharge terminal is connected to the static electricity inducing pattern; a ground wire configured to electrically connect the static electricity inducing pattern of the BMS circuit board and the end plates; and a cable connector for both communicating and grounding connected to the BMS circuit board, wherein the cable connector comprising of: a pack connector having a first connection portion configured to be connected to the data transmission terminal on the BMS circuit board and a second connection portion configured to be connected to the discharge terminal; a harness cable; and a vehicle connector connected to the pack connector by the harness cable and installed to the pack case to be exposed out through a connector mounting hole formed through the pack case. a pack case forming an appearance of the battery pack, the pack case having a cell assembly having a plurality of secondary batteries, wherein the pack case further having end plates located at top and bottom portions of the cell assembly to support the cell assembly, wherein the end plates are made of metal and are connected into a single body by a long bolt member, wherein the cell assembly is interposed between the end plates in the single body; a BMS circuit boards provided in the pack case, the BMS circuit board having a discharge terminal, a data transmission terminal and a static electricity inducing pattern forming a conductor pattern of a predetermined form on the BMS circuit board, wherein the discharge terminal is connected to the static electricity inducing pattern; a ground wire configured to electrically connect the static electricity inducing pattern of the BMS circuit board and the end plates; and a cable connector for both communicating and grounding connected to the BMS circuit board, wherein the cable connector comprising of: a pack connector having a first connection portion configured to be connected to the data transmission terminal on the BMS circuit board and a second connection portion configured to be connected to the discharge terminal; a harness cable; and a vehicle connector connected to the pack connector by the harness cable and installed to the pack case to be exposed out through a connector mounting hole formed through the pack case. a pack connector having a first connection portion configured to be connected to the data transmission terminal on the BMS circuit board and a second connection portion configured to be connected to the discharge terminal; a harness cable; and a vehicle connector connected to the pack connector by the harness cable and installed to the pack case to be exposed out through a connector mounting hole formed through the pack case.