Battery

A battery comprising:

• an electrode body obtained by stacking a positive electrode plate and a negative electrode plate with a separator interposed therebetween;
• an exterior body having an opening and housing the electrode body;
• a sealing plate sealing the opening;
• an external terminal attached to the sealing plate;
• and
• a tab provided at at least one of the positive electrode plate or the negative electrode plate and being electrically connected to the external terminal via a current collector between the electrode body and the sealing plate, wherein:
• the current collector includes a first current collector and a second current collector,
• the first current collector and the second current collector are welded to each other at a welding point,
• the welding point is covered with a covering member,
• the covering member is spaced apart from the welding point and the second collector,
• the first current collector has a recess,
• the first current collector and the second current collector are stacked and welded at the recess,
• the covering member covers the recess, and
• a part of the covering member enters a dent formed by the recess.