Jinx wrote:
>> Well if the internal resistance is high, and if the load is heavy, then 
>> you'll get a non-negligible amount of power being expended across
>> the internal resistance. That will be energy that never makes it into
>> the load, so it will affect the capacity as far as the load's concerned
>>     
>
> It's all relative. Short out a fully-charged NiCd D-cell sometime. Short
> out a tractor battery with a garden fork until we got sworn at and chased
> off by the man next door.....


I'm putting a clutch in my car at the moment so I'm keeping the battery 
stored in the boot. There the other day, just for the craic, I 
short-circuited it using a metal rod. Sadly thought the battery was dead 
so I didn't get fireworks :-(

Anyone know what the internal resistance of a car battery is?

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