![]() ![]() The Odysseyīrands are the best-known suppliers of motorsport AGM batteries. The AGM mats also mean the lead plates are held more securely andīetter resist shock and vibration ideal for harsh competition environment. The pure lead and extra surface area allow the motorsportĪGM batteries to create a lot more power than the equivalent wet cell standard Upright or on their side and this technology also allows the plates to be moreĭensely packed resulting in a more compact battery and the smaller case further This means AGM batteries can be installed Very thin glass fibresĪre woven into a mat to increase the surface area enough to hold theĮlectrolyte on the cells for the battery lifetime. Replaced Absorbed Glass Mat (AGM) technology to contain the acid.ĪGM batteries differ from conventional liquid lead acidīatteries in that the electrolyte is held in glass mats. Giving extra surface area and therefore more power. This allows the plates to be thinner and more can be fitted in the same area The lead plates are normally a much purer lead – some as much as 99%. Use to prevent leaks and need to be fitted upright.īatteries are also lead acid, but these use a different type ofĬonstruction. Lead acid battery with electrolyte will need fitting in a battery box for motorsport This is typically known as a wet cell batteryĪnd this needs to have a robust and typically heavy case to contain theĬorrosive electrolyte and prevent the plates short circuiting. Sponge lead (cathode plates) or coated with lead dioxide (anode). The battery consists of alternate plates made of a lead alloy grid filled with ![]() The most common automotive battery is a lead acid type. As theĭischarge is for such a short time, it is more like a pulse hence the rating With that in mind, the PCA is a very shortĭuration (typically about 3 seconds) at a high rate of discharge. Pulse cranking ampere (PCA) rating does not have an “official”ĭefinition however, it is believed that for true engine start purposes a 30 Some batteries are rated by PCA rather than CCA. This rating gives a good indication of the currentĪvailable, especially useful for tuned high compression engines.Īgain, this allows different sizes and types of batteries Of amps a battery can deliver at 0☏ (-18 degrees C) for 30 seconds and notĭrop below 7.2 volts. CCA / PCA RatingĬold cranking amps (CCA) is a measurement of the number The AH rating is a useful guide to allow comparison between different batteries. ![]() On the contrary, the perceived capacity of the battery will be less. If you discharged that same 100 AH battery with a 100-amp load, it will not give you one hour of discharge. As your load increases, the actual capacity will decrease. However, it’s very important to know that the total time of discharge and load applied is not a proportional. What this means for a 100 AH rated battery is this: Draw from the battery for 20 hours, and it will provide a total of 100-amp hours. The standard rating is an amp rating taken for 20 hours. Having enough capacity but not carrying more weight than necessary, and theįollowing breakdown of specifications and terms will help you chose the correctĪn amp hour (AH) is a rating usually found on most automotive batteries. If you get it badly wrong you might have to buy another or carry around twiceīattery selection for motorsport is a compromise of There are a large range of batteries available in many The batteryĪlso gives extra power where the electrical load is more than the output of theĪlternator for short periods. ![]() System then takes over, which – in most cases – is an alternator. This will typically take around 3% of the battery capacity and the charging System before the engine is turning over fast enough for the engine to fire. The battery allows the starter to operate and powers the ignition When the electrical starter came into use in place of the mechanical starter The automotive use of the battery started in the 1920’s Today even a single electrochemical cell, e.g. Two or more similar objects functioning together”, as in an artilleryīattery, the term came to be used where many electrochemical cells were Originally having the generic meaning of “a group of Linking them together in a “battery” gave a With a static generator and discharged by touching metal to their electrode. He used for his experiments with electricity. founding father,įirst used the term “battery” to describe a set of linked capacitors ![]()
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