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<blockquote data-quote="manyhobbies" data-source="post: 6747813" data-attributes="member: 618823">You could be thinking of national quick start, out of michigan. They make a external big amperage diode rectifier that helps the alternator produce power, I think they call them quickifiers, 210 amp and 420amp. The drawback to this is it can only help the alternator produce power, but it can&#039;t increase the amperage or voltage. I was told by the manuf that it is wise to upgrade to a ho alt first if your pushing some rather big power like 3-4000 watts then to that if needed. But even at that I was also told that it is possible to see voltage fluctuation even with a large amp alternator.I have a couple things to try yet but as of now I still see major voltage drops even with 2 875amp stock batteries wired together and a HO dual rectifier 250amp alternator and everything is wired up with 1/0 weld cable. I was told by manuf to wire my ground from the batteries right to the back of the alternator. I have yet to do this so I&#039;m hoping it fixes it or the alt has to be sent back to see what is going on.Bad part is I&#039;m only pushing 1800watts rms. I&#039;m guessing that around 1000wrms I&#039;m fine.So like others have mentioned, it is about a must to upgrade to a alternator that is capable of supporting the amperage draw that 3000watts is gonna pull, or you will in time burn up the alternator from excessive heat.Russ</blockquote>

[QUOTE="manyhobbies, post: 6747813, member: 618823"] You could be thinking of national quick start, out of michigan. They make a external big amperage diode rectifier that helps the alternator produce power, I think they call them quickifiers, 210 amp and 420amp. The drawback to this is it can only help the alternator produce power, but it can't increase the amperage or voltage. I was told by the manuf that it is wise to upgrade to a ho alt first if your pushing some rather big power like 3-4000 watts then to that if needed. But even at that I was also told that it is possible to see voltage fluctuation even with a large amp alternator. I have a couple things to try yet but as of now I still see major voltage drops even with 2 875amp stock batteries wired together and a HO dual rectifier 250amp alternator and everything is wired up with 1/0 weld cable. I was told by manuf to wire my ground from the batteries right to the back of the alternator. I have yet to do this so I'm hoping it fixes it or the alt has to be sent back to see what is going on. Bad part is I'm only pushing 1800watts rms. I'm guessing that around 1000wrms I'm fine. So like others have mentioned, it is about a must to upgrade to a alternator that is capable of supporting the amperage draw that 3000watts is gonna pull, or you will in time burn up the alternator from excessive heat. Russ [/QUOTE]

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