Battery

[bluer33]

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.

[Munkyb0y]

i knew i saw one on ebay last night

here it is

http://cgi.ebay.com.au/NISSAN-R33-SKYLINE-...1QQcmdZViewItem

[Craved]

those figures sound correct .. how many Amps are being drawn through battery when everything is off ???

[bluer33]

those figures sound correct .. how many Amps are being drawn through battery when everything is off ???

those reading are from my turbo time. amps?

[Craved]

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 August 16, 2006 by Craved

[blind_elk]

How old is the battery? (they don't last forever)

Check with a multimeter what voltage you have at the battery when the engine is at, say, 2500 rpm.

[bluer33]

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?

[Craved]

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

[bluer33]

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 August 16, 2006 by bluer33

[Craved]

over charging the battery can kill them, same as letting them go completely flat a few times

[Kinks]

yeah that charge voltage sounds reasonable, so does the rest voltage of the battery.

what happens if you disconnect the battery and then reconnect it before starting the next morning?

[Landy]

Hey man... i had a similar problem with mine...

try cleaning up the earth from the alternator to the steel work... just on left of alternator... might be it... couldn't hurt to try

[mad082]

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 August 16, 2006 by mad082