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Re: [Healeys] Testing a battery, non Healey

To: Simon Lachlan <simon.lachlan@homecall.co.uk>
Subject: Re: [Healeys] Testing a battery, non Healey
From: Dave Russell <rusd@sitestar.net>
Date: Mon, 21 Jan 2008 11:07:08 -0700
Simon,

60 milliamps is 0.060 amps. This would be 1.44 amp hours per day, 10 amp 
hours per week, 43 amp hours per month, etc. Since the draw is on-off 
instead of steady the actual drain would be less.

How long the battery would last depends on the battery size, condition, 
& how often the car is driven to recharge it. If your battery was 
originally rated at 60 amp hours, the battery would be discharged maybe 
1/3 in a month. If the battery is old or in poor condition, it might 
very well have less than it's original capacity & go flat sooner.

I would expect most batteries to last at least a month without driving 
before going flat.

A battery shop or similar can do a battery capacity/load test to 
determine it's exact condition.

Dave Russell

Simon Lachlan wrote:
If I disconnect the battery's + lead and put a test light between clamp and

>terminal, the light illuminates.
>
>If I put in a meter, I get a reading of 60milliamps, I think. The arrow
>flicks in time with the red light on the console for the alarm system. Do I
>assume that the 60 milliamps is primarily being consumed by the alarm?
>
>How much is 60 milliamps anyhow? Six thousandths of an amp?? Doesn't sound
>like much? But spread it over a week???
>
>I think this is pointing me towards the old/dying battery scenario......??
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