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<blockquote data-quote="7ender" data-source="post: 6317016" data-attributes="member: 584862">First off, i&#039;m definetely no expert when it comes to electrical.I have a spare battery i&#039;d like to run in my trunk, but it&#039;s resting at only 7.7 volts.&nbsp; It&#039;s a small Odyssey 18ah dry cell, and iv&#039;e already got another (good) one in the trunk as well.Can someone explain exactly how this would work?&nbsp; From my understanding, these trunk batteries kind of act like giant capacitors, soaking up any big draws from my system.&nbsp; So, if I add a dead battery into my mix, how would it&#039;s low voltage affect things?&nbsp; When i&#039;m driving my car, wouldn&#039;t the battery be charged and act the same as the good battery?But, when I turn the car off/let it sit, will the dead battery draw from the good ones and kill them?Yeah, I could use some educating //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gifThanks</blockquote>

[QUOTE="7ender, post: 6317016, member: 584862"] First off, i'm definetely no expert when it comes to electrical. I have a spare battery i'd like to run in my trunk, but it's resting at only 7.7 volts. It's a small Odyssey 18ah dry cell, and iv'e already got another (good) one in the trunk as well. Can someone explain exactly how this would work? From my understanding, these trunk batteries kind of act like giant capacitors, soaking up any big draws from my system. So, if I add a dead battery into my mix, how would it's low voltage affect things? When i'm driving my car, wouldn't the battery be charged and act the same as the good battery? But, when I turn the car off/let it sit, will the dead battery draw from the good ones and kill them? Yeah, I could use some educating [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] Thanks [/QUOTE]

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