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Batteries are over rated
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<blockquote data-quote="hispls" data-source="post: 8746937" data-attributes="member: 614752"><p>Is that 250A on a test bench, cold, and at some specific (not driving around town or parked) RPM? At what cost for some oddball cased alternator?</p><p></p><p>How have you measured this? What do the discharge vs voltage curves look like?</p><p></p><p>And many people do run multiple alternators AND large battery banks. HO alternators are 600$ or so on something nice these days and I don't know what custom mounting brackets would cost to get fabricated right now but probably not cheap and good luck finding a good welder/fab shop who can get you in the door in under a month. </p><p></p><p>Depending on the music you use and how loud you play it, you may well be drawing very little power averaged over time. </p><p></p><p>Really you're not selling me on supercaps here. IMO they're completely obsolete for our purposes by just about every measure when compared to some of the new LTO battery options we have available. Nobody here is telling people not to upgrade alternators, but for practical purposes if an off-the-shelf solution doesn't exist for multiple alternator mounting there are few if any reasons to attempt to go that route as opposed to just adding bigger reserve Lithium banks.</p></blockquote><p></p>
[QUOTE="hispls, post: 8746937, member: 614752"] Is that 250A on a test bench, cold, and at some specific (not driving around town or parked) RPM? At what cost for some oddball cased alternator? How have you measured this? What do the discharge vs voltage curves look like? And many people do run multiple alternators AND large battery banks. HO alternators are 600$ or so on something nice these days and I don't know what custom mounting brackets would cost to get fabricated right now but probably not cheap and good luck finding a good welder/fab shop who can get you in the door in under a month. Depending on the music you use and how loud you play it, you may well be drawing very little power averaged over time. Really you're not selling me on supercaps here. IMO they're completely obsolete for our purposes by just about every measure when compared to some of the new LTO battery options we have available. Nobody here is telling people not to upgrade alternators, but for practical purposes if an off-the-shelf solution doesn't exist for multiple alternator mounting there are few if any reasons to attempt to go that route as opposed to just adding bigger reserve Lithium banks. [/QUOTE]
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