RHR BOOST Moderating Team 5,698 Member For: 21y 5m 8d Gender: Male Location: Southern Highlands NSW Posted 20/08/08 07:39 AM Share Posted 20/08/08 07:39 AM But wouldnt having a near dead battery make the alternator work harder. Link to comment Share on other sites More sharing options...
tab Sucker Moderating Team 32,303 Member For: 20y 9m 20d Gender: Male Location: Brisbane Posted 20/08/08 07:49 AM Share Posted 20/08/08 07:49 AM I'm no automotive electrician but that's what I reckon...always seems to run better with a new battery and the replacements are usually done with a memory-saver battery plugged in to the car during the swap over so that intentionally nothing is reset. I believe these things will not run without a battery so there has to be some dependence on it somewhere along the line even with the alternator spinning. Link to comment Share on other sites More sharing options...
Adam Here since the start... Lifetime Members 10,282 Member For: 21y 9m 19d Gender: Male Location: Victoria Posted 20/08/08 08:38 AM Share Posted 20/08/08 08:38 AM That's right.Mechanical diesels will run without a battery as spark isn't used to make the fuel burn like a vehicle pertrol engine. Link to comment Share on other sites More sharing options...
Mike XR6T iTs alL DaRDy........ Donating Members 780 Member For: 17y 5m 8d Gender: Male Location: Adelaide Posted 20/08/08 09:16 AM Share Posted 20/08/08 09:16 AM guysI am an auto electrician and rev head robbo is on the money.a flat(or faulty) battery will make the alternator output more currrent to try and recharge it.the more current the alt outputs the stronger the magnetic field in the alt and therefore the more energy lost due to magnetic friction.a higher load on the alt means the engine has 2 waste more energy to spin it.a brand new battery is 100% charged and 100% good will mean that the alt doesnt need to work as hard and there for neither does the engine. that's y u notice a bit more power. the cold air helps 2!these carw will run with out a battery but its a very dangerous thing to do and should never b done ever! the batetry is as resistor that helps regulate the voltaeg from the alt. if you disconnect the battery with the car running it will continue to run HOWEVER the voltage output from the alt goes sky high 16+ volts which is extreamly dangerous for any type of 12v ecu that is designed to work 7-14.5 volts.and you could do SERIOUSn damage.hope that chears things up a bit.sorry for the spelling mike Link to comment Share on other sites More sharing options...
tab Sucker Moderating Team 32,303 Member For: 20y 9m 20d Gender: Male Location: Brisbane Posted 20/08/08 10:42 AM Share Posted 20/08/08 10:42 AM hope that chears things up a bit.Certainly does! Link to comment Share on other sites More sharing options...
CJ_AK cj_ak Donating Members 5,077 Member For: 17y 7m 14d Gender: Male Location: Ropes Crossing Posted 20/08/08 10:57 AM Share Posted 20/08/08 10:57 AM I never knew that. Thanks for the input mate Link to comment Share on other sites More sharing options...
Superdan Well-Hard Bangin' Member Member 3,422 Member For: 17y 5m 25d Gender: Male Location: Perff, WA Posted 20/08/08 02:49 PM Author Share Posted 20/08/08 02:49 PM Definately worth mentionin Mike, thanks for the input dude!!Dan Link to comment Share on other sites More sharing options...
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