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The Water Cooler
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Have a geeky question here and if someone does electronics they may be able to help.
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<blockquote data-quote="NightShade" data-source="post: 3307020" data-attributes="member: 29706"><p>The large caps actually can provide enough cranking power. They even make booster packs now that are designed to do exactly this. <a href="https://amzn.to/377sIG9" target="_blank">https://amzn.to/377sIG9</a> Just about every retailer has one of the packs available. </p><p></p><p>Part of the reason is I have been having issues with the battery running down. It's harder on a regular battery than a deep cycle but swapping in a deep cycle has it's own issues since they don't handle providing cranking power well which can shorten the battery life. Having a built in "jumper pack" while a little more costly to begin with in combination with a deep cycle battery may cost a little more but should outlive it's regular battery component and the replacement of the deep cycle battery is cheaper than a regular battery so over the lifespan of the whole system it should actually be cheaper. The one issue is keeping the draw from the battery from being too much when starting or between cranking if the first try doesn't work.</p><p></p><p>These caps <a href="https://amzn.to/37aJWTd" target="_blank">https://amzn.to/37aJWTd</a> are actually being put into ready made replacement packs for some vehicles as well. <a href="https://www.maxwell.com/products/esm/esm-ultra-31-1800" target="_blank">https://www.maxwell.com/products/esm/esm-ultra-31-1800</a> But they have an issue without how dense the energy storage is but they are nearly at a point to put lithium ion batteries under.</p><p></p><p>If it's not something I can figure out I will probably end up with a pair of group 27 or 31 batteries in parallel or a 4D or possibly an 8D</p><p></p><p>The issue with a relay or disconnect is that when reconnecting between cranking operations the capacitors could suck too much juice if what I read is correct. I thought about a 200w .1 or .5 ohm resistor as well but I am wondering if there is a better way from my understanding doesn't the resistor also cut the voltage after it as well?</p></blockquote><p></p>
[QUOTE="NightShade, post: 3307020, member: 29706"] The large caps actually can provide enough cranking power. They even make booster packs now that are designed to do exactly this. [URL]https://amzn.to/377sIG9[/URL] Just about every retailer has one of the packs available. Part of the reason is I have been having issues with the battery running down. It's harder on a regular battery than a deep cycle but swapping in a deep cycle has it's own issues since they don't handle providing cranking power well which can shorten the battery life. Having a built in "jumper pack" while a little more costly to begin with in combination with a deep cycle battery may cost a little more but should outlive it's regular battery component and the replacement of the deep cycle battery is cheaper than a regular battery so over the lifespan of the whole system it should actually be cheaper. The one issue is keeping the draw from the battery from being too much when starting or between cranking if the first try doesn't work. These caps [URL]https://amzn.to/37aJWTd[/URL] are actually being put into ready made replacement packs for some vehicles as well. [URL]https://www.maxwell.com/products/esm/esm-ultra-31-1800[/URL] But they have an issue without how dense the energy storage is but they are nearly at a point to put lithium ion batteries under. If it's not something I can figure out I will probably end up with a pair of group 27 or 31 batteries in parallel or a 4D or possibly an 8D The issue with a relay or disconnect is that when reconnecting between cranking operations the capacitors could suck too much juice if what I read is correct. I thought about a 200w .1 or .5 ohm resistor as well but I am wondering if there is a better way from my understanding doesn't the resistor also cut the voltage after it as well? [/QUOTE]
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