It depends on the battery. Batteries that are more powerful (and
therefore usually more expensive) can produce more amps (which is
proportional to the power they produce) than less powerful ones. A
low-end battery can produce about 500 amps at 0 degrees F (-18 degrees
C), a high-end one more than double that. Around 800 amps seems to be
typical.
The power capability of a car battery is typically measured in
cold-cranking amps (CCA).
Automotive Batteries
"CCAs are the discharge load measured in amps that a new, fully
charged battery, operating at 0 o F (-17.8 o C), can deliver for 30
seconds and while maintaining the voltage above 7.2 volts."
http://www.pacificpowerbatteries.com/aboutbatts/Car%20Battery%20FAQ/carfaq7.html
Cars that are driven (and therefore started) in cold climates
generally need more power capability than ones driven in warm
climates. That is because a cold engine is more difficult to start
than a warm one.
The above document also indicates how much power is needed:
"To start a 4-cylinder gasoline engine, you will need approximately
600-700 CCA; 6-cylinder gasoline engine, 700-800 CCA; 8-cylinder
gasoline engine, 750-850 CCA; 3-cylinder diesel engine, 600-700 CCA;
4-cylinder diesel engine, 700-800 CCA; and 8-cylinder diesel engine,
800-1200 CCA.
"In hot climates, buying batteries with double or triple the cranking
amps that exceed your starting requirement can be a WASTE of money.
However, in colder climates the higher CCA rating the better, due to
increased power required to crank a sluggish engine and the
inefficiency of a cold battery. As batteries age, they are also less
capable of producing CCAs. According to the Battery Council
International, diesel engines require 220% to 300% more current than
their gasoline counterparts; winter starting requires 140% to 170%
more current than the summer."
The following page shows a selection of car batteries and the amps
they produce. Note that the CCA ranges from 500 to 1,100 amps. When
it's warmer, the amperage capability increases; the same batteries can
produce from 625 to 1,740 amps at the freezing point of water.
Optima Auto Car Batteries
http://www.batteryweb.com/optima.cfm
The ones on this page range from 680 to 1,700 CCA:
West Coast batteries
http://www.odysseybatteries.com/auto.htm
I hope this fully answers your question.
Sincerely,
Mvguy-ga
Google search term: "car batteries" amps
://www.google.com/search?q=%22car+batteries%22+amps&hl=es&lr=&ie=UTF-8&oe=utf-8&start=25&sa=N |
