An electrochemical device, comprising: an electrochemical module; and an enclosure configured to enclose said electrochemical module, comprising: a first housing portion having a first rim; a second housing portion having a second rim, at least one of said first housing portion and said second housing portion being insulative; a crimp ring in engagement with said first rim and said second rim, such as to secure said first housing portion with respect to said second housing portion, with a volume defined between them configured to enclose said electrochemical device; and a grommet positioned between and contacting said first rim and said second rim; wherein said enclosure is substantially sealed; and wherein said crimp ring comprises opposing longitudinal edges; wherein said first rim of said first housing portion and said second rim of said second housing portion each form a lip having a contact surface (28, 30), said contact surface being configured to contact, at least in part, said grommet portion; and wherein each of said lip of said first rim of said first housing portion and said lip of said second rim of said second housing portion is configured to admit a respective one of said longitudinal edges of said crimp ring, and wherein said crimp ring engages around a periphery of said first rim of said first housing portion and said second rim of said second housing portion. an electrochemical module; and an enclosure configured to enclose said electrochemical module, comprising: a first housing portion having a first rim; a second housing portion having a second rim, at least one of said first housing portion and said second housing portion being insulative; a crimp ring in engagement with said first rim and said second rim, such as to secure said first housing portion with respect to said second housing portion, with a volume defined between them configured to enclose said electrochemical device; and a grommet positioned between and contacting said first rim and said second rim; wherein said enclosure is substantially sealed; and wherein said crimp ring comprises opposing longitudinal edges; a first housing portion having a first rim; a second housing portion having a second rim, at least one of said first housing portion and said second housing portion being insulative; a crimp ring in engagement with said first rim and said second rim, such as to secure said first housing portion with respect to said second housing portion, with a volume defined between them configured to enclose said electrochemical device; and a grommet positioned between and contacting said first rim and said second rim; wherein said enclosure is substantially sealed; and wherein said crimp ring comprises opposing longitudinal edges; wherein said first rim of said first housing portion and said second rim of said second housing portion each form a lip having a contact surface (28, 30), said contact surface being configured to contact, at least in part, said grommet portion; and wherein each of said lip of said first rim of said first housing portion and said lip of said second rim of said second housing portion is configured to admit a respective one of said longitudinal edges of said crimp ring, and wherein said crimp ring engages around a periphery of said first rim of said first housing portion and said second rim of said second housing portion.