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Second Battery, dont you need an isolator?
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<blockquote data-quote="seedubs1" data-source="post: 4438607" data-attributes="member: 582013"><p>I think what he's getting at is that in parallel, voltages are equivelant. So if you are using different batteries, shouldn't you have to do something about the voltage differences, or the batteries will try to reach some sort of medium resting voltages (draining one with the higher resting voltage in order to supply the lower resting voltage batt.)?</p><p></p><p>I think if the resting voltages are fairly close, you shouldn't have a problem. Problems here really only occur when you have an old battery that is going to die soon and keeps trying to discharge the good batteries to keep it's voltage up.</p><p></p><p>Did I get that right? My brain is kinda fried right now from studying for ME finals:crying:</p><p></p><p>Or maybe he's just getting at trying to have a battery that will still have enough juice to start his car after he's done draining the other batts.</p></blockquote><p></p>
[QUOTE="seedubs1, post: 4438607, member: 582013"] I think what he's getting at is that in parallel, voltages are equivelant. So if you are using different batteries, shouldn't you have to do something about the voltage differences, or the batteries will try to reach some sort of medium resting voltages (draining one with the higher resting voltage in order to supply the lower resting voltage batt.)? I think if the resting voltages are fairly close, you shouldn't have a problem. Problems here really only occur when you have an old battery that is going to die soon and keeps trying to discharge the good batteries to keep it's voltage up. Did I get that right? My brain is kinda fried right now from studying for ME finals:crying: Or maybe he's just getting at trying to have a battery that will still have enough juice to start his car after he's done draining the other batts. [/QUOTE]
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Second Battery, dont you need an isolator?
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