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bluer33

By bluer33,
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bluer33 Enthusiast

bluer33

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Posted

hi all,

my battery keep on dieing, i drove the car everyweekend and only on the weekend. but lately i have to push start the car to get it going, would it be the alternater? wild driving it read 14.2v but wheni turn the car off it instantly gone to 12.7v i tried changing the baterry it didnt help. how much can i get a new alternater for including fitting, also would a maxima ultinator be ok? thanks for ur help.

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Craved Grand Master

Craved

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Posted (edited)

each battery has an amp hours rating.. so it can supply say 60amp hours

EDIT : was slightly off lol

Amp Hours

The Amp Hour rating tells you how much amperage is available when discharged evenly over a 20 hour period. The amp hour rating is cumulative, so in order to know how many constant amps the battery will output for 20 hours, you have to divide the amp hour rating by 20. Example: If a battery has an amp hour rating of 75, dividing by 20 = 3.75. Such a battery can carry a 3.75 amp load for 20 hours before dropping to 10.5 volts. (10.5 volts is the fully discharged level, at which point the battery needs to be recharged.) A battery with an amp hour rating of 55 will carry a 2.75 amp load for 20 hours before dropping to 10.5 volts.

i have the same issue with my car as its a weekender too.

solar panel charging is how i fixed it up

Edited by Craved
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bluer33 Enthusiast

bluer33

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Posted
each battery has an amp hours rating.. so it can supply say 60amp hours

EDIT : was slightly off lol

Amp Hours

The Amp Hour rating tells you how much amperage is available when discharged evenly over a 20 hour period. The amp hour rating is cumulative, so in order to know how many constant amps the battery will output for 20 hours, you have to divide the amp hour rating by 20. Example: If a battery has an amp hour rating of 75, dividing by 20 = 3.75. Such a battery can carry a 3.75 amp load for 20 hours before dropping to 10.5 volts. (10.5 volts is the fully discharged level, at which point the battery needs to be recharged.) A battery with an amp hour rating of 55 will carry a 2.75 amp load for 20 hours before dropping to 10.5 volts.

i have the same issue with my car as its a weekender too.

solar panel charging is how i fixed it up

so you dont think its the alternator? how will i know if the afternator is no longer working correctly?

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Craved Grand Master

Craved

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Posted

the charge the battery recieves should always be around 14.5v from the alternator.. if its above or well below that it would need to be looked at . ie make sure its belt is not slipping etc

try what Blind_elk said .. the charge value should remain the same from idle to all revs.. shouldn't change dramatically

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bluer33 Enthusiast

bluer33

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the charge the battery recieves should always be around 14.5v from the alternator.. if its above or well below that it would need to be looked at . ie make sure its belt is not slipping etc

try what Blind_elk said .. the charge value should remain the same from idle to all revs.. shouldn't change dramatically

i forgot to mention that i drove the car on sunday for a good hour and today i need to push start. this is the second bettery, both were 1 year old.

Edited by bluer33
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mad082 Grand Master

mad082

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Posted (edited)

i've had this happen in a few of my daily drivers. can drive around at night, then next morning they are dead. only happens in winter. its the cold weather that kills batteries. you may've bought the battery 12 months ago, but it may've been sitting on the shelf for 6 months before that. get a new battery and it should be all good. get a century, since they have a warranty.

Edited by mad082
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