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<blockquote data-quote="smoka" data-source="post: 5751561" data-attributes="member: 606721">You can monitor the voltage or the temperature. The voltage should never go over upper 14&#039;s and the temp of the batt should never go over ~125 degrees.Seeing those pics are scary because it could happen to anyone no matter how careful we are. I&#039;m not sure if a fuse will protect it. I&#039;m not an alt expert, but since an alt is basically just a generator, I would assume that at a higher voltage the current output would drop since there is no change in load. So I don&#039;t think a fuse would help an overcharging batt.They make plenty of products that will disconnect the batt when the voltage gets too low, I&#039;m suprised that I couldn&#039;t find anything that does the same when the voltage gets too high?Here is one failsafe solution, but its not too cheap.You can get a dc process voltmeter that has setpoints such as this:<a href="http://store.redlion.net/store/comersus_viewItem.asp?idProduct=2227" target="_blank">http://store.redlion.net/store/comersus_viewItem.asp?idProduct=2227</a>You can connect the (relayed) output to a high current solenoid which can disconnect your battery such as this: (the setpoint can be around 15v to turn on its output)<a href="https://www.discountcarstereo.com/detail.aspx?ID=569" target="_blank">https://www.discountcarstereo.com/detail.aspx?ID=569</a>Just pieced this solution together, not sure if I would do it. You could monitor the voltage yourself for alot cheaper, but this would be an automatic system....</blockquote>

[QUOTE="smoka, post: 5751561, member: 606721"] You can monitor the voltage or the temperature. The voltage should never go over upper 14's and the temp of the batt should never go over ~125 degrees. Seeing those pics are scary because it could happen to anyone no matter how careful we are. I'm not sure if a fuse will protect it. I'm not an alt expert, but since an alt is basically just a generator, I would assume that at a higher voltage the current output would drop since there is no change in load. So I don't think a fuse would help an overcharging batt. They make plenty of products that will disconnect the batt when the voltage gets too low, I'm suprised that I couldn't find anything that does the same when the voltage gets too high? Here is one failsafe solution, but its not too cheap. You can get a dc process voltmeter that has setpoints such as this: [URL="http://store.redlion.net/store/comersus_viewItem.asp?idProduct=2227"]http://store.redlion.net/store/comersus_viewItem.asp?idProduct=2227[/URL] You can connect the (relayed) output to a high current solenoid which can disconnect your battery such as this: (the setpoint can be around 15v to turn on its output) [URL="https://www.discountcarstereo.com/detail.aspx?ID=569"]https://www.discountcarstereo.com/detail.aspx?ID=569[/URL] Just pieced this solution together, not sure if I would do it. You could monitor the voltage yourself for alot cheaper, but this would be an automatic system.... [/QUOTE]

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