#$%^&*AU2014100127A420140320.pdf#####Abstract The present invention relates to a mobile electric device, in particular a handheld tool or a garden tool or the like, having an electrically powered drive motor for powering rotating, oscillating, and/or circulating tool carriers or processing tools, with the power 5 supply of said mobile electric device comprising at least two lithium-ion batteries of the same specification and largely the same capacity and the same nominal voltage, said two batteries being electrically connected in series. The invention further relates to an arrangement comprising at least two electrically series-connected lithium-ion batteries of the same specification and largely the same capacity and the same nominal voltage, 10 said two batteries being particularly used for supplying power to a mobile electric device, such as a handheld tool, a garden tool, or the like. 5111431_1 (GHMatters) P96190.AU 13/02/1410 /10 o