Posts Tagged 'The Virtual Mechanic'

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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Batteries – What Are Batteries ?

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Ask the average battery purchaser this question and most would say that a battery is simply the source of power necessary to start the engine of every motor driven vehicle.  Since most purchases are unplanned for, consumers usually have little knowledge or understanding about one of the most vital components of an automobile – the very essence of its electrical power.

With the increased demand of today’s technologically advanced cars, a basic understanding of the automotive battery, how it works and ...

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Electrical System – The Battery

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The battery

PURPOSE
The battery is designed to store power and deliver power to all accessories.  Also to receive charge from the alternator.  Batteries are only as good as their connections and connections on the battery poles should not have any white powder or corrosion built up.  This is a problem.  The purpose of the battery is to hold current, receive charge from the alternator and deliver power to all accessories.  Batteries 20 years ago would last around 10 years.  Batteries ...

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Weekly Checks – FanBelts

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Cooling/Electrical System – FanBelts
 Checking the fan belt is an easy task. By pushing on the fan belt you can ascertain if the tension is firm or loose. Also, first thing in the morning, by revving the engine, you may notice a high pitched screech. This indicates the fan belt is loose and needs attention ASAP. A high pitched screech may also self destruct a fan belt particularly if it’s a polyrib belt, that is a later generation type belt. ...

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Electrical System – Alternator

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Alternator
 PURPOSE
The alternator is a component that is fitted outside or around the front of the engine. It is a round component and has a fan belt connected to it. If the fan belt is connected tightly it will allow the alternator to charge somewhere between 13.8-14.2 volts. The alternator is designed to charge at this voltage to the battery. The alternator’s purpose is to keep the battery recharged..The alternator is not designed to fully charge the battery if ...

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ELECTRICAL SYSTEM – Battery terminals

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ELECTRICAL SYSTEM – Battery terminals
 PURPOSE
The purpose of the battery terminal is to hold all the cables either on the negative or positive battery poles. The battery terminal needs to be in fixed position. A sure connection is a connection that will not move. The best battery terminal is a brass battery terminal as it is not workable or malleable. There are many different types of battery terminals on the market. Most of these terminals do require replacing over ...

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