The present invention relates to a volume hologram laminate with low generation of spotty hologram flaws in the volume hologram layer even when kept under pressurized conditions during storage, and to a volume hologram laminate-fabricating label. The secondary battery includes an electrode assembly including a first electrode plate, a second electrode plate, and a separator; a can accommodating the electrode assembly; and a cap assembly covering a top opening of the can. This invention avoids the need of such a cable change, and reduces the costs of having connectors on the new module, and provides scaleable costs that are incurred only as modules are required.