A lighting device , comprising: - a lighting unit configured to perform a lighting function under a first operational mode of the lighting device; - at least one application unit different from the lighting unit and configured to perform an application function different from the lighting function under a second operational mode of the lighting device; - a battery housing comprising a first battery compartment with a first electrical contact set for accommodating and connecting a first battery, and a second battery compartment with a second electrical contact set for accommodating and connecting a second battery, wherein the first and second battery compartments are configured to force an exclusive spatial accommodation of only one of the first and second batteries in the battery housing at a given point in time; wherein - the lighting unit is electrically connected to the first electrical contact set for being powered by the first battery in the first operational mode; and - the application unit is electrically connected to the second electrical contact set for being powered by the second battery in the second operational mode; and wherein, the lighting device is configured to perform the lighting function under the first operational mode when the first battery is accommodated in the first battery compartment and perform the application function under the second operational mode when the second battery is accommodated in the second battery compartment ; wherein a maximum power requirement of the lighting unit under the first operational mode is different than a maximum power requirement of the at least one application unit under the second operational mode . - a lighting unit configured to perform a lighting function under a first operational mode of the lighting device; - at least one application unit different from the lighting unit and configured to perform an application function different from the lighting function under a second operational mode of the lighting device; - a battery housing comprising a first battery compartment with a first electrical contact set for accommodating and connecting a first battery, and a second battery compartment with a second electrical contact set for accommodating and connecting a second battery, wherein the first and second battery compartments are configured to force an exclusive spatial accommodation of only one of the first and second batteries in the battery housing at a given point in time; wherein - the lighting unit is electrically connected to the first electrical contact set for being powered by the first battery in the first operational mode; and - the application unit is electrically connected to the second electrical contact set for being powered by the second battery in the second operational mode; and wherein, the lighting device is configured to perform the lighting function under the first operational mode when the first battery is accommodated in the first battery compartment and perform the application function under the second operational mode when the second battery is accommodated in the second battery compartment ; wherein a maximum power requirement of the lighting unit under the first operational mode is different than a maximum power requirement of the at least one application unit under the second operational mode . <EOS>