BATTERY

A battery includes an outer housing (2) and a cell (5). The cell is received in a first receiving cavity of the outer housing, the outer housing is arranged with an insulating member (1). At least one information obtaining component is received in the first receiving cavity and fixed to the cell. Each information obtaining component includes a detection assembly, a power supply battery (31), a wireless transmitting end (33) and a circuit board (32). A detection end of the detection assembly is attached to the cell, the wireless transmitting end is disposed adjacent to the insulating member and is configured to transmit a signal, and the signal is capable of transmitting through the insulating member to reach an exterior of the first receiving cavity.