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  2. Battery holder - Wikipedia

    en.wikipedia.org/wiki/Battery_holder

    Battery types such as the 9-volt have snap-on contacts. Battery holders for zinc-air batteries must not be completely air-tight since approximately 1 litre of air is required per ampere-hour of discharge per cell. The battery holder may include a valve integrated with the device power switch to allow air to be admitted when the device is ...

  3. Battery energy storage system - Wikipedia

    en.wikipedia.org/wiki/Battery_energy_storage_system

    Battery energy storage systems are generally designed to be able to output at their full rated power for several hours. Battery storage can be used for short-term peak power [2] and ancillary services, such as providing operating reserve and frequency control to minimize the chance of power outages. They are often installed at, or close to ...

  4. Glass battery - Wikipedia

    en.wikipedia.org/wiki/Glass_battery

    The battery was invented by John B. Goodenough, inventor of the lithium cobalt oxide and lithium iron phosphate electrode materials used in the lithium-ion battery (Li-ion), and Maria H. Braga, an associate professor at the University of Porto [5] and a senior research fellow at Cockrell School of Engineering at The University of Texas.

  5. Biosafety cabinet - Wikipedia

    en.wikipedia.org/wiki/Biosafety_cabinet

    Red is single pass air and is safe for chemical use. Purple is uncertainty due to location of the BSCs smoke-split) The Type A1 cabinet, formerly known as Type A, has a minimum inflow velocity of 75 ft/min. The downflow air, considered contaminated, splits just above the work surface (the BSCs smoke split) and mixes with the inflow.

  6. BNC connector - Wikipedia

    en.wikipedia.org/wiki/BNC_connector

    In 1941, the US Navy used a smaller version of the threaded N connector, the Type BN (Baby N), as the UG-85/U, UG-86/U, UG-114/U and UG-115/U. . In 1943, the British introduced a ¼ inch 50 ohm coaxial cable, and companies immediately developed many connectors for it.

  7. Box battery - Wikipedia

    en.wikipedia.org/wiki/Box_battery

    The box battery is a disposition of the main armament in a battleship, commonly used in ships built in the latter half of the 19th century. A box battery consists of a thick armour surrounding a central battery to protect the guns. [1] It was an interim disposition between full-length broadside guns and turret-mounted artillery.