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Old 10-24-2008, 02:00 AM   #32 (permalink)
RH77
Depends on the Day
 
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Join Date: Nov 2007
Location: Kansas City Area
Posts: 1,761

Teggy - '98 Acura Integra LS
Sports Cars
90 day: 32.74 mpg (US)

IMA - '10 Honda Insight EX
Team Honda
90 day: 34.76 mpg (US)

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Quote:
Originally Posted by Ptero View Post
You need a gauge to verify that you need to replace your 7-year-old battery? I use a load tester for that but I keep it in my tool box. Also, the bird is not a yaw string. It conveys a lot more information.
Well, I use a "yaw string" more for severe Weather reporting, but the longevity of a battery is not mutually exclusive. I've had some that have lasted 2 years under normal conditions, and this one, which starts the vehicle at 100F or -10F and is pushing the 7-year mark under severe conditions.

The odd part -- I engine-off coast and run the headlights, ventilation blower, and sometimes the rear window defrost under batt only. So far all I've noticed an A/C-like draw from time-to-time, which I suspect is the alternator. I have a multimeter, but it reads the voltage as 12.5V+ across the terminals when cold, and 14.1V+ when operational.

My fear is a failing batt with an overworked alt, but how do I make that conclusion?

RH77
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