nicad rechargeable batteries!

nicad rechargeable batteries

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1) "Nicad" -- As to nicad rechargeable batteries ni·cad Pronunciation: 'nI-"kad Function: noun Usage: often capitalized N&C Etymology: 1nickel + cadmium : a rechargeable storage battery that has a nickel cathode and a cadmium anode Pronunciation Symbols From top to bottom â€” "Gumstick", AA, and AAA NiCd batteries. Battery specifications Energy/weight 40-60 Wh/kg Energy/size 50-150 Wh/L Power/weight 150W/kg Charge/discharge efficiency 70%-90%[2] Energy/consumer-price Self-discharge rate 10%/month Time durability Cycle durability 2000 cycles Nominal Cell Voltage 1.2 V Charge temperature interval The nickel-cadmium battery (commonly abbreviated NiCd and pronounced "nye-cad") is a popular type of rechargeable battery for portable electronics and toys using the metals nickel (Ni) and cadmium (Cd) as the active chemicals. The abbreviation NiCad is a registered trademark of SAFT corporation and should not be used to refer generically to nickel-cadmium batteries. They are sometimes used as a replacement for primary cells, such as heavy duty or alkaline, being available in many of the same sizes. In addition, specialty NiCd batteries have a niche market in the area of cordless and wireless telephones, emergency lighting, as well as power tools. Due to their beneficial weight/energy ratio as compared to lead based technologies and good service lifetimes, nickel-cadmium batteries of large capacities with a wet electrolyte (wet NiCds) are used for electric cars and as start batteries for airplanes. Nickel-cadmium cells have a nominal cell potential of 1.2 V. This is lower than the 1.5 V of many popular primary cells, and consequently they are not appropriate as a replacement in all applications. However, unlike most primary cells, NiCds keep a near constant voltage throughout their service life. Because many ele..." 2) "Rechargeable" -- As to nicad rechargeable batteries re·charge Pronunciation: (")rE-'chärj intransitive verb 1 : to make a new attack 2 : to regain energy or spirit transitive verb 1 : to charge again; especially : to restore anew the active materials in (a storage battery) 2 : to inspire or invigorate afresh : RENEW - re·charge /(")rE-'chärj, 'rE-"/ noun - re·charge·able /(")rE-'chär-j&-b&l/ adjective - re·charg·er /-j&r/ noun Pronunciation Symbols A rechargeable lithium polymer Nokia mobile phone battery. Rechargeable batteries, also known as storage batteries or secondary cells, are batteries that can be restored to full charge by the application of electrical energy. They are also called accu/akku, which is short for accumulator. They come in many different designs using different chemicals. Attempting to recharge non-rechargeable batteries is not advised as it has a small chance to lead to battery explosion. Some types of rechargeable batteries are susceptible to damage due to reverse charging if they are fully discharged; other types need to be fully discharged occasionally in order to maintain the capacity for deep discharge. There exists fully integrated battery chargers that optimize the charging current. Rechargable batteries currently are used for lower power applications such as automobile starters, portable consumer devices, tools, and uninterruptable power supplies. Emerging applications in hybrid vehicles and electric vehicles are driving the technology to improve cost, reduce weight, and increase lifetime. Future applications are proposed to use rechargable batteries for load leveling, where they would store baseline electric power for use during peak load periods, and for renewable energy uses, such as storing power generated from photovoltaic arrays during the day to be used at night. 1 Battery types 1.1 Nickel-iron 1.2 Lead 1.2.1 Wet lead acid 1.2.2 Gel 1.2.3 Absorbed glass mat 1.3 Nickel-cadmium 1.4 Nickel metal hydride 1.5 Lithium ion 1.6 Lithium ion polymer 1.7 Sodium-sulfur 1.8 Nickel-zinc 1.9 Molten salt 1.10 Super iron 1.11 Zinc-bromine flow ..." 3) "Batteries" -- As to nicad rechargeable batteries bat·te·rie Pronunciation: "ba-t&-'rE Function: noun Etymology: French, literally, beating -- more at BATTERY : a ballet movement consisting of beating together the feet or calves of the legs during a leap Pronunciation Symbols Four double-A (AA) rechargeable batteries energy Portal In science and technology, a battery is a device that stores chemical energy and makes it available in an electrical form. Batteries consist of electrochemical devices such as two or more galvanic cells, fuel cells or flow cells. The modern development of batteries started with the Voltaic pile, announced by the Italian physicist Alessandro Volta in 1800.[1] The worldwide battery industry generates US$48 billion in sales annually (2005 estimate). Formally, an electrical "battery" is an interconnected array of similar voltaic cells ("cells"). However, in many contexts it is common to call a single cell used on its own a battery. 1 History 2 How batteries work 3 Classification of batteries 4 Battery capacity and discharging 5 Conversion to energy 6 Battery lifetime 7 Battery explosion 8 Rechargeable and disposable batteries 8.1 Disposable 8.2 Rechargeable 9 Homemade cells 10 Traction batteries 11 Flow batteries 12 Environmental considerations 13 Cells in series or in parallel 14 Effect of a battery's internal resistance 15 Glossary 16 See also 17 References 18 Bibliography A Voltaic Pile, the first battery. The earliest known artifacts that may have served as batteries are the Baghdad Batteries, from some time between 250 BC and 640 AD. However, it i..." 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