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Battery Glossary

Battery Glossary: Two or more electrochemical cells electrically interconnected in an appropriate series/parallel arrangement to provide the required operating voltage and current levels. Under common usage, the term "battery" is often also applied to a single cell.
Cell: An electrochemical system that converts chemical energy into electrical energy.
Capacity: This is amount of energy a battery cell or battery pack actually provides. The higher the capacity the longer the equipment will run on battery power. Usually measured in Amp hours (Ah) or Milliamp hours (mAh).
Battery Charger:This is the process of passing electricity into the asus laptop batteries pack so the pack can be used to provide power when the user is away from mains power.
Charger: The conversion of electrical energy, provided in the form of electrical current from an external source, to restore the chemical energy in a cell or battery.
Memory Effect: A phenomenon in which a cell or acer battery operated in successive cycles to the same, but less than full, depth of discharge temporarily loses the rest of its capacity at normal voltage levels.
Overcharge: The forcing of current through a cell after all the active material has been converted to the charged state, that is, continued charging after reaching 100 percent state-of-charge.
Rechargeable battery: A galvanic battery which, after discharge, may be restored to the fully charged state by the passage of an electrical current through the cell in the opposite direction to that of discharge.
Self-Discharge: The loss of useful capacity of a battery on storage due to internal chemical action (local action).
Li-ion: Lithium Ion. This is one the newest Toshiba Qosmio Series types available. It can offer the same power as a Ni-MH battery in a smaller & lighter package. This type does not suffer from 'Memory Effect' but it is expensive to manufacture.
Ni-Cd: Nickel Cadmium. This is one of the oldest battery technologies that are still in use. Usually found only in older equipment or applications that require a high power drain. Very prone to 'Memory Effect'.
Ni-MH: Nickel Metal Hydride. This battery type has virtually replaced the Ni-Cd batteries. This type offers higher capacities, around 30% more than a Ni-Cd cell of the same physical size. This type is also reported to suffer less from 'Memory Effect'.
Battery Float Voltage: A unit for measuring electrical pressure. All batteries provide DC (Direct Current) electricity. It is important to ensure that the equipment you are powering is being provided with the correct volt or else damage may occur.
Watts: A measurement of energy, arrived at by multiplying the voltage by the amperage.
Watt Hours : A common measurement of energy produced in a given amount of time, arrived at by multiplying the voltage by the amp hours.

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