battery-operated en
41Nickel–cadmium battery — From top to bottom – Gumstick , AA, and AAA Ni–Cd batteries. specific energy 40–60 W·h/kg energy density 50–150 W·h/L specific power 150& …
42Company of Mineral and Battery Works — The Company of Mineral and Battery Works was, (with the Society of Mines Royal), one of two mining monopolies created by Queen Elizabeth I of England in the mid 1560s. The Company s rights were based on a patent granted to William Humfrey on 17… …
43History of the battery — could only function in a certain orientation. Many used glass jars to hold their components, which made them fragile. These practical flaws made them unsuitable for portable appliances. Near the end of the 19th century, the invention of dry cell… …
44VRLA battery — A valve regulated (sealed) lead–acid battery A VRLA battery (valve regulated lead–acid battery) is a type of low maintenance lead–acid rechargeable battery. Because of their construction, VRLA batteries do not require regular addition of water to …
45Earth battery — An Earth battery is composed of a pair of electrodes made of two dissimilar metals, such as iron and copper, which are buried in the soil or immersed in the sea. A device that is placed in water is labeled a sea battery . It can act as a receiver …
46Napier of Magdala Battery — 100 Ton Gun Rosia Bay, Gibraltar …
47148 (Meiktila) Battery Royal Artillery — 148 (Meiktila) Commando Forward Observation Battery is a specialist Naval Gunfire Support Forward Observation (NGSFO) unit within 29 Commando Regiment Royal Artillery of 3 Commando Brigade Royal Marines. The unit provides Forward Observation… …
48Brooklyn-Battery Tunnel — For|the original subway tunnel to Brooklyn, sometimes called the Brooklyn Battery Tunnel in the early days [CityClub of New York, [http://books.google.com/books?vid=OCLC28110662 id=Aj4 cN9oow0C New York City Transit: A Memorandum Addressed to the …
49Hooper Battery — was a hilltop earthworks fortification, built for the Defense of Cincinnati during the American Civil War in Northern Kentucky by the Union Army to turn back invading Confederate troops. It was constructed to protect Cincinnati and the Ohio River …
50Ben Buckler Gun Battery, North Bondi — The Ben Buckler Gun Battery is a fortified gun emplacement and defence fortification of the late Victorian period, it is located in the Northern Bondi locality of Ben Buckler, Sydney Australia. [ [http://www.waverley.nsw.gov.au/library/localstudie… …
