battery running flat after 2 weeks max?


egshane

egshane

B18C ek9
Joined
Jun 7, 2009
Messages
2,248
Alright guys need your help!

I fit a new batter 2 weeks ago because my old one died, I thought it was just needed a new one. Fit a brand new battery 2 weeks later its dead again? Havnt left lights on or anything else? So wondering what the problem could be?
 
Check for loose earths first if not that.
Jump start the car and when the car is running measure the voltage accross the battery with a mulitmeter. see what output your altotnator is giving you. then test it with a load switch on your lights and heaters.
 
Any check the voltage from the "batter"
It could just be faulty
If its fine then check for voltage coming into the batter from the alternator, could be that.
Assuming it was installed properly
 
alternator isnt charging by the sounds off. can be reconditioned. using a multimeter u can measure if the alternating is charging or not.
 
as above, check alternator voltage when the car is running, it should read 14.4v if healthy.

Halfords can do a battery check free of charge, this can tell you if your alternator is goosed, and also the %'age capacity of your battery, and can advise if its able to be recharged or if its goosed.
 
Do a current draw test or get one done buy someone. You will need a half decent multimeter. Somthing could be pulling excess ampage. Radio for example??
 
yeah i thought it was the alternator will have to get that checked asap!

cheers for the advise people will be getting on to this asap
 
Check yr drain with an amp clamp or muti metre should be no more then 0.1 as its a small battery you might hav on there .
 
Bigskank said:
Check yr drain with an amp clamp or muti metre should be no more then 0.1 as its a small battery you might hav on there .
Click to expand...

Honda spec is 0.03 amps if im not mistaken?? Someone might have to clarifly that but pretty sure its right. If its 0.1 amp its to high.
 
i had this problem, where the battery earth that connects to the chassis by the passenger side suspension moutings in the engine bay there was a tegiwank torque dampener there, and the earth bolt was loose in the bracket for the dampner causing it to short. scratched paint off the bracket and re tightened it and been ok since
 
Sounds silly, but connections to the terminal's to the battery tapped down and pushed as far down as they can go, then tightened? Had this problem on my EK, Didn't realize the terminal's were slightly chamfered and got thicker towards the base for a tighter and more secure fit :/
 
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