How accurate is the battery gauge?

Ghostvette · 12-22-2015, 04:29 PM

Quote:

Originally Posted by kennyz

So long story short, woke up this morning tried starting my car , it wont turn on , nothing work , car won't unlock or lock. At first I thought it was steering lock failure since I haven't had a chance to pull my fuse BT from reading on the forum , it says it should still unlock and lock , lights should work still if is steering lock failure. Fortunately j was able to jumpstart the car so it definitely wasn't steering lock. I was driving my car perfectly fine yesterday and I always see my battery gauge above 12 and close to 14 if I remember correctly. So my question is how accurate is the guage? If my gauge is reading at like 14 .. My battery shouldn't have died so easily?

Quote:

Originally Posted by barncobob

how old is battery? anything over 3 years is a candidate for replacement

Voltmeter in car shows alternator output only.

What barncobob says is mostly correct. I replace wet cell batteries every two years regardless of warranty. I've never had a 'failure to start' due to battery since I started this practice.

Now for the inevitable question: "What battery do I get?"

AGM... whether it is an Optima or any other AGM, it doesn't really matter. An AGM battery will likely be the last one you put in your car. Just my

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