ok the system i am going to be setting up has two 760w amps now that means at peak power they would be pulling 112amps and around 52amps continus my alt. puts out 37amps but we know the battery can put out around 800-1200amps (give or take) should i upgrade my alt.
now what i have so far learned from these H.O. alternators is they wont really start charching the battery untell 1500 rpms which isnt untell 35 to 40 mph
Your battery can only generate those numbers for a few seconds at a time(starting the car) or it will over heat. Also the battery puts out 12 volts. Most stock alts put out 13.8, and most after market alts put out 14.4 to 15.8. Your alt is too small for even one amp. Your alternator will always be charging your battery if the engine is running. as long as its voltage doesnt drop below 12 volts then it is charging the batt. In your situation i would look at getting something in the 175 amp range. Also, you will want to eventually upgrade your power and ground wires for your alt to battery.
ok with the amps i am getting they should pull 40 to 55 amps continus when i have the stereo cranked this place in my town sells 94 amp alts for $53.00 BUT they tell me that HO alts wont charge your battery untell 1500 rpm which is around 30 to 35 mph. o and i am driving a 1979 GM http://www.cardomain.com/memberpage/547269