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ric355
Member Since: 02 May 2011
Location: Surrey, UK
Posts: 302
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tanertimur wrote:Once the car starts its the alternator that kicks in and runs
The car and its electrics giving out about 13.5v (average). So regardless
Of battery state as long as alternator is working fine then the car would/should run the same.
Cant see how a change of battery would boost the cars performance.
I've mulled over this for a while too, and wasn't sure whether it was just in everyone's heads - especially the diesel owners as they don't even have a spark to make better through a new battery. However, consider this: Although the engine will run directly off the alternator, it still needs a battery to do so because the alternator generates an alternating current through a diode pack which is a fairly 'lumpy' (square wave) signal, and the battery smooths this out. So, if you have a knackered battery then the alternator is going to be running a lot which will put a drain on engine performance (something those with a lot of power will notice less though). A poor condition battery won't maintain its voltage as well so the alternator will kick in and out a lot as the voltage regulator circuit operates. This might result in quite lumpy performance.
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23rd Nov 2011 10:29pm |
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