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Special Battery Types (Mod. 2 pt6)
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- 1The _______ battery is a very popular type of rechargeable battery used in many types of industrial tools and systems.nickel cadmium
- 2The abbreviation for nickel cadmium is _____.NiCad
- 3Almost all cordless or battery-powered tools use _____ battery packs containing 2 or more cells.NiCad
- 4The positive plate of a NiCad cell is made of _______.nickel hydroxide
- 5The negative plate of a NiCad cell is made of _______.cadmium hydroxide
- 6NiCad cells are often connected together to make _______.battery packs
- 7The _____ of a battery is the amount of current the battery can deliver in one hour.C rate
(Ex: the C rate of a 1 AH battery is 1 A) - 8_______ batteries are usually charged with a constant current of 1/10 of the C rate.Standard charge
(Ex: If the C rate is 1 A, then the charging current is 0.1 A because 0.1 x 1 A=0.1 A) - 9A _______ battery is usually charged with a constant current of 1.0 times the C rate.rapid charge
(Ex: a 1 AH battery 1 A in one hour) - 10When charging a rapid or standard charge battery, charging time is increased by ____ due to energy loss through heat.50%
- 11The high-temperature NiCad battery has the _____ recharge rate.slowest
- 12_______ NiCad batteries are used as backup power supplies in computer memory board circuits.High-temperature
- 13_______ use very low current to recharge a cell or battery pack and may be left on the cell or pack indefinitely.Standard chargers
- 14Standard chargers are also called _____ chargers.trickle
- 15If you try to recharge a NiCad battery before it is fully discharged, it may only recharge to a small fraction of its possible charge level. This is known as a "_____" problem.memory
- 16A fully _____ battery will be able to accept a full charge.discharged
- 17_______, like NiCad cells, are used as backup power supplies for memory circuit boards, alarm systems, smoke alarms, watches, and pacemakers.Lithium cells
- 18Lithium batteries have a high discharge rate. This is known as a _______.high energy density
- 19_______ is the measure of how much energy a battery contains in proportion to its weight.Energy density
- 20There are two types of lithium cells: the ________ cell and the ________ cell.poly-carbon monofluoride, manganese dioxide
- 21When a lithium cell is put in a computer's memory circuit, a _______ and a _____ are also put in the circuit. These components prevent the main power supply from trying to charge the battery when the computer is drawing power from its own DC power supply.blocking diode, resistor
- 22Lithium batteries with a _____ electrolyte are rechargeable.solid
- 23The ______ type of battery is used in laptop and notebook computers.zinc/air
- 24The type of small lead/acid battery that's used in backup systems in computers is called a _________. These batteries are maintenance-free and don't have vent holes. Instead the internal gases are chemically recombined into their original compounds.uninterruptable power supply
- 25The abbreviation for "uninterruptable power supply" is ____.UPS
- 26A NiCad battery can go through more than ____ charging and discharging cycles before it can no longer produce electricity.100
- 27A standard lithium cell has an output voltage of ____.3 V
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