On 1/29/05 11:47 AM, "John Connolly" <john@AIRCOOLED.NET> wrote:

> I should point out that a battery is a load to an alternator. Adding
> additional batteries increases the load (and drag) on the engine, even if
> they are fully charged. A fully charged battery is a significant load to the
> alternator.
> 
> John
> Aircooled.Net Inc.
> 
> 
Most vehicles I have worked with measured at 2 to 5 amps with a charged
battery (no lights or access running). Testing I did with my old jetta
showed a 6 to 10 amp after a hard start.  However a battery that has been
taken down to under 11V and jumped will pull from 15 amps to 25 amps.  I did
this test a few years ago with a bunch of batteries after hearing what I
considered to be myths associated with jumped cars.  Turns out they may not
be myth but depend on the type and brand and grade of battery.

Bench testing by adding batteries in line (charged) added 1 to 2 amps each.

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jimt
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