Battery cell, battery, and electric apparatus

A battery cell, comprising:

• an electrode assembly, comprising a body portion, a first tab, and a second tab with a polarity opposite to that of the first tab, wherein:
• a first size L1 of the body portion in a length direction thereof is greater than a second size L2 of the body portion in a width direction thereof;
• the first tab is located on at least one end of the body portion in the width direction;
• and
• the first tab comprises two first sub-tabs, and the two first sub-tabs are respectively located on two ends of the body portion in the width direction;
• a first electrode terminal, located on a side of the electrode assembly in the length direction;
• and
• a first adapting component, comprising a first adapting plate and two second adapting plates, wherein the first adapting plate is configured to be connected to the first electrode terminal, and the two second adapting plates are configured to be connected to the two first sub-tabs respectively.