Flexible rechargeable battery

A flexible rechargeable battery comprising:

• a first conductive substrate configured as packaging material of the flexible rechargeable battery comprising a first resin layer, a first barrier layer, a second resin layer, a first electrode current collector layer, and a first electrode coating layer that are sequentially stacked inward from a first side of the flexible rechargeable battery;
• a second conductive substrate configured as packaging material of the flexible rechargeable battery facing the first conductive substrate, the second conductive substrate comprising a third resin layer, a second barrier layer, a fourth resin layer, a second electrode current collector layer, and a second electrode coating layer that are sequentially stacked inward from a second side of the flexible rechargeable battery;
• and
• a sealant at edges of the first conductive substrate and the second conductive substrate,
• wherein the second resin layer includes a plurality of openings forming first conducting parts configured for allowing electrical conduction between the first barrier layer comprising a conductive metal and the first electrode current collector layer, and/or
• wherein the fourth resin layer includes a plurality of openings forming second conducting parts configured for allowing electrical conduction between the second barrier layer comprising a conductive metal and the second electrode current collector layer.