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?What is Battery
An electrochemical battery is a device in which the reaction between two substances can be made to occur in such a way that some of the chemical energy is converted to useful . When the cell can only be used once, it is called a "primary" cell-electricity
Certain cells are capable of only a few charge-discharge cycles and are, therefore, technically "secondary" cells
?What is Lead Acid Battery
Lead-acid batteries, invented in 1859 by French physicist Gaston Planté, are the oldest type of rechargeable battery. Despite having a very low energy-to-weight ratio and a low energy-to-volume ratio, their ability to supply high surge currents means that the cells maintain a relatively large power-to-weight ratio. These features, along with their low cost, make them attractive for use in motor vehicles to provide the high current required by automobile starter motors.
Battery Testing
Testing is designed to tell us things we want to know about individual cells and batteries.
Some typical questions are:
· Is it fully charged ?
· How much charge is left in the battery ?
· Does it meet the manufacturer's specification ?
· Has there been any deterioration in performance since it was new ?
· How long will it last ?
· Do the safety devices all work ?
· Does it generate interference or electrical noise ?
· Is it affected by interference or electrical noise ?
The answers are not always straightforward.
Cycle testing
Cycle life is usually defined as the number of charge - discharge cycles a battery can perform before its nominal capacity falls below 80% of its initial rated capacity. These tests are needed to verify that the battery performance is in line with the end product reliability and lifetime
expectations and will not result in excessive guarantee or warranty claims.
.............. Soon to be followed
expectations and will not result in excessive guarantee or warranty claims.
.............. Soon to be followed
http://www.mpoweruk.com/
http://hyperphysics.phy-astr.gsu.edu/hbase/electric/leadacid.html
http://en.wikipedia.org/wiki/Lead%E2%80%93acid_battery
http://www.grc.nasa.gov/WWW/Electrochemistry/doc/battery.html
