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The Water Cooler
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<blockquote data-quote="NightShade" data-source="post: 3307039" data-attributes="member: 29706"><p>Ok so 400 maybe?</p><p></p><p></p><p></p><p>I have a high amp alternator <a href="https://www.mechman.com/alternators/dodge/dakota/3-7l/2000-2006/240-amp-alternator-for-3-7-4-7-chrysler-late/" target="_blank">https://www.mechman.com/alternators/dodge/dakota/3-7l/2000-2006/240-amp-alternator-for-3-7-4-7-chrysler-late/</a> And I could go dual battery as well, but I am just working my options. The capacitors can literally take thousands of complete discharge cycles without issue and can easily last ten to twenty years while a set of batteries used to start are usually replaced around the 5 year mark and continually lose their ability to store energy to sulfates. I could use an oversized deep cycle as well which should have the ability to last longer. Ideally I would go with a LifePO4 battery however they do not do well with cold temperatures like a vehicle will often deal with. A lot of this is figuring the pro's and cons of everything to find something that will last a long time as well as provide what I need at a decent price point. The use of a group 27 or 31 deep cycle along with a capacitor bank would give me the ability to have the cranking power needed with a fairly long battery life if too large of a load is not applied to the battery in one shot hence the addition of something to limit the current draw. I have not decided yet if any one way is going to be best but I hate the thought of having to buy vehicle batteries at 130 to 150 every five years if I can spend 200 now and replace the battery every 10 years at 80.</p></blockquote><p></p>
[QUOTE="NightShade, post: 3307039, member: 29706"] Ok so 400 maybe? I have a high amp alternator [URL]https://www.mechman.com/alternators/dodge/dakota/3-7l/2000-2006/240-amp-alternator-for-3-7-4-7-chrysler-late/[/URL] And I could go dual battery as well, but I am just working my options. The capacitors can literally take thousands of complete discharge cycles without issue and can easily last ten to twenty years while a set of batteries used to start are usually replaced around the 5 year mark and continually lose their ability to store energy to sulfates. I could use an oversized deep cycle as well which should have the ability to last longer. Ideally I would go with a LifePO4 battery however they do not do well with cold temperatures like a vehicle will often deal with. A lot of this is figuring the pro's and cons of everything to find something that will last a long time as well as provide what I need at a decent price point. The use of a group 27 or 31 deep cycle along with a capacitor bank would give me the ability to have the cranking power needed with a fairly long battery life if too large of a load is not applied to the battery in one shot hence the addition of something to limit the current draw. I have not decided yet if any one way is going to be best but I hate the thought of having to buy vehicle batteries at 130 to 150 every five years if I can spend 200 now and replace the battery every 10 years at 80. [/QUOTE]
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