About: http://webisa.webdatacommons.org/73295606

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Preferably, the power source comprises an internal power source such as a battery, a solar cell, a miniature fuel cell or the like.
http://www.w3.org/ns/prov#wasQuotedFrom	freepatentsonline.com