Posts Tagged 'Darren Gow-Brown author of Basic Car Maintenance and free advice'

What Makes A Battery Work ?

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A battery is an efficient and compact energy storage centre created by a manufacturing process that combines chemicals, grids, plates and separators to produce electrical power.  Within each cell a battery houses a group of alternate positive and negative plates held apart by separators and bathed in electrolyte.
Since each cell supplies approximately 2.1 volts, a six volt battery would contain three cells connected in a series.  Six cells would prove a “12 volt” battery (actually 12.6 volts).  The size, ...

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How Does A Battery Produce Its Electrical Energy ?

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Batteries produce their power through a chemical reaction which is released when a load, such as a light globe, starter motor or electric fan, is connected to the battery.  As was observed more than 100 years ago, when two different metals are placed in a liquid capable of conducting electricity, and the metals are connected together above the liquid, electrical current flows through the connection.

The different metals are referred to as electrodes.  Pure lead is used for the negative electrode ...

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Keeping Up With The Changes

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Today’s automotive battery has undergone an evolution of change since its humble beginnings more than 180 years ago.  But some of the most significant changes have occurred in only the last ten years.

Modern cars demand more powerful batteries to cope with advances such as electronic ignition systems, on-board computers, air conditioning, mobile phones and central locking.  Compared to 30 years ago when the average car produced a typical total load of 275-300 watts, today an average car can produce a ...

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What Are The Two Types Of Automotive Batteries ?

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Most people are familiar with the conventional “SLI” ) Starting, Lighting and Ignition) lead-acid battery which delivers the high amp energy necessary to provide maximum starting power.  Once the engine has started, the alternator recharges the battery.  However, repeated cycling, as well as the continual process of discharging and recharging, eventually weakens the :SLI: battery which provides concentrated starting power, the deep cycle type battery supplies a constant but relatively low amount of current for a long period of time ...

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What Do We Expect From The Automotive Battery ?

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In addition to providing the starting power required, the automotive battery also supplies power to accessories such as lights, fans and radio when the engine is not running.  Between low engine speeds and when accessory load is greater at high running speeds, a battery makes up the difference by stabilising the alternator output.

This stabilising effect also protects a vehicle’s electrical system by smoothing out sudden high voltages which can damage electrical components.

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