BATTERY

The present invention provides a battery, including: a housing (1) enclosed to form a chamber and including a first side plate (11) and a bottom side plate (16) connected with the first side plate (11); a cell (2) located in the chamber and provided with a first tab (21); and a first adapter (31) electrically connected with the first tab (21), where the first adapter (31) is disposed between the first side plate (11) and the cell (2), and a projection of the first adapter (31) on the first side plate (11) does not overlap with a projection of the first tab (21) on the first side plate (11); and where the battery further includes a first connector located between the cell (2) and the first side plate (11) and connected with the first tab (21) and the first adapter (31), respectively; and the first connector includes a first connection sheet (51) connected with the first adapter (31) and a fourth connection sheet (54) connected with a side of the first tab (21) facing away from the cell (2); and a side of the first connection sheet (51) facing away from the first adapter (31) is provided with a sixth insulation layer (86), and a projection of the sixth insulation layer (86) on the sixth side plate (16) overlaps with a projection of the first tab (21) on the sixth side plate (16). The present invention can improve the battery performance such as energy density.