Patent ID: 8501334

Claim:
A battery assembly comprising: an electrode assembly that generates electrical power and is rechargeable; a pouch casing formed of a polymer material, wherein the pouch casing defines a space that receives the electrode assembly and an electrolyte and is sealable so that the space is sealed; an electrolyte injection and extraction member that is positioned in the pouch casing so as to allow electrolyte to be injected into and extracted from the space and wherein the electrolyte injection and extraction member is resealable following injection or extraction of the electrolyte, wherein the electrolyte injection and extraction member defines a sealable aperture that communicates between the exterior of the pouch casing and the space and a first sealing member that seals the sealable aperture and is removable from the electrolyte injection and extraction member and wherein the electrolyte injection and extraction member and the first sealing member engage with each other so that the first sealing member is replaceable with a second sealing member.