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Some battery info
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<blockquote data-quote="MNboy" data-source="post: 1298200" data-attributes="member: 16059"><p>The issue with AGM batteries, like the Optima, is that they want different charge voltages than gels or flooded batteries. I don't have any specific experience with the PPW alternators, but Dale mentioned 16v+ charge voltages, and most of the sealed batteries won't tolerate that high a voltage for long. For short duration, or while using a high draw device like the welder or winch, it wouldn't be a problem, but long term it will fry the battery. The best option is an adjustable external regulator for the alternator so you can set the voltages, but I'm not sure the PPW can use an external regulator. </p><p>A plug in charger for use when the rig is sitting is a good option, but it's dependent on the charger to a point. Chargers that do "three stage" charging and especially those with different settings for gel and AGM batteries work best, but anything to keep the battery topped off will help.</p><p>Someone else mentioned using an isolator for multiple batteries, which most times is a bad idea because they have pretty substantial voltage drop between the alternator and battery, but if the voltage on the PPW is 16v it may be a great option to bring the voltage back down to a reasonable range.</p></blockquote><p></p>
[QUOTE="MNboy, post: 1298200, member: 16059"] The issue with AGM batteries, like the Optima, is that they want different charge voltages than gels or flooded batteries. I don't have any specific experience with the PPW alternators, but Dale mentioned 16v+ charge voltages, and most of the sealed batteries won't tolerate that high a voltage for long. For short duration, or while using a high draw device like the welder or winch, it wouldn't be a problem, but long term it will fry the battery. The best option is an adjustable external regulator for the alternator so you can set the voltages, but I'm not sure the PPW can use an external regulator. A plug in charger for use when the rig is sitting is a good option, but it's dependent on the charger to a point. Chargers that do "three stage" charging and especially those with different settings for gel and AGM batteries work best, but anything to keep the battery topped off will help. Someone else mentioned using an isolator for multiple batteries, which most times is a bad idea because they have pretty substantial voltage drop between the alternator and battery, but if the voltage on the PPW is 16v it may be a great option to bring the voltage back down to a reasonable range. [/QUOTE]
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