Disclosed is a battery pack which can be adaptively used even in various approaching and extending directions of a connection wire even while ensuring the safety by minimizing exposure of an electrode terminal. The battery pack according to the present invention comprises: a cell assembly having a plurality of secondary batteries, a pack housing having an internal space to receive the cell assembly, an electrode terminal which is connected to the cell assembly and is formed to protrude to the outside of the pack housing, and a terminal cover which covers the top portion and a part of the sides of the electrode terminal and is configured to be attached/detached to/from different positions of the pack housing.