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General Car Audio
What Wattage is too expensive?
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<blockquote data-quote="winkychevelle" data-source="post: 8823611" data-attributes="member: 611804"><p>C rate is the rate at which a batt can discharge relative to ah</p><p></p><p>1 c on a 8ah batt is only 8amp</p><p>10c is 80amps</p><p></p><p>Scale that up to 300ah at 10c and that's 3000amps of available current.</p><p></p><p>3000amp×14.4v=43200w×75% efficiency=32400w</p><p></p><p>You can get cells with c ratings as high as 75c but most decent lithium cells that are used in care audio are at least 5c but mostly 10c. </p><p></p><p>Headways you should consider 5c</p><p>Yinglong 10c </p><p>Lishen 10c</p><p>Plannano 10c </p><p></p><p>They are actually a little higher but you should be a little conservative because they will sag in cell voltage when you get near the max c rating of the cell.</p></blockquote><p></p>
[QUOTE="winkychevelle, post: 8823611, member: 611804"] C rate is the rate at which a batt can discharge relative to ah 1 c on a 8ah batt is only 8amp 10c is 80amps Scale that up to 300ah at 10c and that's 3000amps of available current. 3000amp×14.4v=43200w×75% efficiency=32400w You can get cells with c ratings as high as 75c but most decent lithium cells that are used in care audio are at least 5c but mostly 10c. Headways you should consider 5c Yinglong 10c Lishen 10c Plannano 10c They are actually a little higher but you should be a little conservative because they will sag in cell voltage when you get near the max c rating of the cell. [/QUOTE]
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What Wattage is too expensive?
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