Chargers for electronic devices; chargers of the kind that are attachable to a power outlet and connect to a mobile device in the form of a mobile phone, a mobile display, or a mobile media player; chargers that expand or enhance the processing power of a mobile device; chargers that expand or enhance the functionality of a mobile device; chargers that expand or enhance the storage of a mobile device; chargers that include a speaker for a mobile device; chargers that include a microphone for a mobile device; chargers that serve as a battery backup for a mobile device; chargers that serve as a battery expansion for a mobile device; chargers that serve as a battery charger for a mobile device; chargers that include sensors for detecting air quality, namely, for detecting components in the form of volatile gases, carbon dioxide, carbon monoxide, pollen or toxins included in air; chargers that include sensors for detecting air quality, namely, for detecting physical characteristics of air in the form of temperature, barometric pressure or humidity of air; chargers that include sensors for detecting air quality, namely, for detecting components of air in the form of oxygen concentration of air or nitrogen concentration of air
Electrical and Scientific Apparatus