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High energy consumption is one of the major factors that contributes to global warming. Connected to this, a directive has been approved by the European Union for establishing a legal framework to govern eco-design of energy-using products. This technical note reveals life cycle analysis of two electrical products, which rely on the same rechargeable battery system (i.e. the same energy source) for operations, with respect to the requirements of the aforementioned directive. Results concur with the argument that energy consumption of this sort of product plays a dominant role in terms of a variety of environmental impacts (like emission to air). Based on the results of this study, eco-design alternatives can be derived accordingly so that energy consumption and the existing solution can be benchmarked, as required by the directive.