Battery Light Comes On Every Now And Then

[fib]

Hey guys,

My battery light comes on every now and then esp. after it rains. I drive for like afew minutes and it goes off. Could it be the alternator or the battery that needs changing?

This happens about once every 2 weeks or so.

Cheers,

fibbo.

[neofenrir34]

Hey guys,

My battery light comes on every now and then esp. after it rains. I drive for like afew minutes and it goes off. Could it be the alternator or the battery that needs changing?

This happens about once every 2 weeks or so.

Cheers,

fibbo.

To start u should check your charge rate from your alternator. It should charge at around 14v. Next check your battery voltage with the car off It needs to be above 12.3v(minimum) or the car will not start (if you can get your hands on a correct battery tester, test the CCA rating as well, even if voltage is good the battery can still be shagged). My theory is that you are getting a bit of water in the alternator some how and it is not charging correctly. Hope that helps

FYI: taking your car for a short drive will not recharge the battery. You need to drive atleast 50kms with minimal additional electrics on to just recharge what it takes to start a car. (that goes for every one not just this issue)