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<blockquote data-quote="72Impala" data-source="post: 8323890" data-attributes="member: 559727">When running 5k+ if you are wanting to stay at the 14volt or higher range, you will need dual alts. Honestly 350 amp alts never really give you that real world, and two-3 of them are gonna cost a lot.&nbsp; What you do is run a big battery bank.&nbsp; Don&#039;t stress over playing at battery resting voltage.&nbsp; I have a big bank, and one alt. The alternators job is to charge the batteries, not charge the amp.&nbsp; Highway driving you may keep up the voltage better but at red lights, cruising town, demo..&nbsp; Don&#039;t count on your alternators, count on your battery resting voltage.&nbsp; My opinion for 5kw... h/O alt, and 3 group 31&#039;s or better.&nbsp; When your voltage starts going below resting voltage, then back off the gain and let the alt charge te batteries.Most of those demos you see on YouTube are at or close to battery resting voltage.&nbsp; Unless you got like 3 alts or better with 5kw+ your not gonna stay at charging voltage</blockquote>

[QUOTE="72Impala, post: 8323890, member: 559727"] When running 5k+ if you are wanting to stay at the 14volt or higher range, you will need dual alts. Honestly 350 amp alts never really give you that real world, and two-3 of them are gonna cost a lot. What you do is run a big battery bank. Don't stress over playing at battery resting voltage. I have a big bank, and one alt. The alternators job is to charge the batteries, not charge the amp. Highway driving you may keep up the voltage better but at red lights, cruising town, demo.. Don't count on your alternators, count on your battery resting voltage. My opinion for 5kw... h/O alt, and 3 group 31's or better. When your voltage starts going below resting voltage, then back off the gain and let the alt charge te batteries. Most of those demos you see on YouTube are at or close to battery resting voltage. Unless you got like 3 alts or better with 5kw+ your not gonna stay at charging voltage [/QUOTE]

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