Originally Posted by wickedchargerrt
its kinda simple math.
say you have a 750 cca battery in the trunk thats low , maybe 600 on average.
you listen to the stereo for twenty minutes running the fcm, acm , and amplifier about 50 amps or so for 20 minutes which drops that 600 down about 580 or so. Then you do it again a week later and its down a bit more. remember your alternator is basically there to run the vehicle accesories itself while the vehicle is running. Its not meant to charge the battery. The battery is nothing but a reserve capacitor. The alternator is where the vehicle gets its power
You're describing the battery as an OUT only device where amps only go out but can never go back in. This is simply not the case. See below for the proper explanation of the system. Have you ever seen an ammeter that has + and - on it? This shows you when the current is going out of or INTO the battery (charging).
Originally Posted by richd
Car Alternator Importance
A car alternator is responsible for powering a car's accessories--radio, lights, horn--during normal engine operation. The car battery supplies the initial charge that allows the car to be started, and then the alternator takes over the job of supplying a constant electrical feed. In addition, the alternator is responsible for recharging the battery after the battery loses some of its strength from starting the car.
2006 Inferno Red SRT8 with groups I, II, Sunroof, K&N drop-in filter, Auto-dim mirror, Jet-180 T-stat, Predator, 300 SRT struts/springs, Chally SRT wheels.
Born 6-21-06, Home 4-26-10. 1/4 mile - 12.989 @ 108.78 in street trim. Traded 10-19-2012.
2006 Inferno Red R/T with R&T Born 8-12-05, Home 8-25-05, Sold 8-9-10.