Posted by John T on December 16, 2010 at 11:40:11 from (66.244.97.31):
In Reply to: Re: Jumping 6v? posted by mkirsch on December 16, 2010 at 10:40:14:
With all due respect, your statement:
"If you can safely "fast charge" a 6V battery with a commercial battery charger, you can certainly jump it with a 12V battery"
I BEG TO DIFFER WITH AND HERES THE ENGINEERING AND PHYSICS RELATED REASONING WHY
I CAN GIVE YOU AT LEAST A COUPLE REASONS WHY ITS DIFFERENT (more dangerous) TO JUMP USING A BATTERY VERSUS USING A BATTERY CHARGER
A heavy duty battery has the capacity/ability to supply SOMETHING LIKE 1000 AMPS (ever heard of say a 500 to 1000 CCA rated battery???) while even a fairly big battery charger only has something like 50 to 100 amps capacity/ability.
A battery charger has its own overload protection device to limit its current output so it doesnt overheat and destroy itself WHICH THE 12 VOLT BATTERY DOES NOT. The battery may supply 1000 amps for a brief time period before it exhausts its internal stored energy or warps its plates etc BUT A 50 OR 100 AMP CHARGER SIMPKY CANT SUPPLY 1000 AMPS (at least NOT for any significant time as compared to a battery) LIKE A BIG BATTERY CAN.
FOR SAFETYS SAKE I MUST STILL ADVICE PEOPLE NOTTTTTTTTTTTT TO JUMP A 6 VOLT BATTERY WITH A 12 VOLT BATTERY AND I MAINTAIN (reasons above) THERE IS INDEED A DIFFERENCE IN USING A CHARGER VERSUS ANOTHER BATTERY
PS Im NOT here to fight or argue but to HELP people and prevent injury if I can
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