Posted August 28, 200718 yr Is there a way, such as a calculation, or some type of rule of thumb to determine what alternator, as well as how many batteries it will take to run a certain system? Are there any guidelines to determine these values? For example, lets say i have a 5000 watt system, can i plug that into an equation, or some sort of outline to determine what size alternator i would need, and how many batteries i would need? or if i wanted an 8000watt system, same thing.... Is there a rule, like for every 1000watts you need a certain amount of amps within a battery? I am not trying to figure anything out for myself, I am just askin for basic knowledge to see if there is an easy way to determine this (mostly about the extra batteries part), thanks in advance!
August 28, 200718 yr http://www.kinetikaudio.com/calc.aspat least this will do your batteries and others should be able to help more...
September 1, 200718 yr Divide the total number of watts going to your subs by the number of volts (12-13). That will give you an approximation for the number of amps required from your alternator.
September 2, 200718 yr The people from rockford fosgate said for every 1,000 watts your alternator needs to pump out at least 70a. If you find out some info on a good alternator brand that will do atleast 250a, let me know. I keep on asking in a couple of different forum and get no help
September 3, 200718 yr Alternators:HO altsOhio GeneratorIraggi AltsExcessive AmperageLook 'em up, search the forums.
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