d1e638-1-1__para__8
Therefore, in smoke alarms which are designed for at least 10 years of uninterrupted operation matched by a battery with the same service life, and where continuity of power supply and a permanent connection between the product and the respective portable battery is required to ensure the safety of the user and the appliance, it is considered that the portable battery does not need to be removable and replaceable by the end-user.
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Source: EUR-Lex (Cellar) · retrieved 2026-09-07 · Text as adopted (Official Journal); later amendments are not incorporated in this text.