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Off The Water
Watering Hole
charge your trolling batteries with your truck
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<blockquote data-quote="ben2go" data-source="post: 49845" data-attributes="member: 751"><p>I had 2 batteries in my car.1 for the car and 1 for the entertainment system.I also had a 110 amp alternator specificly built for that.A standard truck alternator would have a hard time charging batteries,maintaining a charge shouldn't be a problem.Charging 2 batteries would require a second alternator putting out around 40 amps.The distance to the batteries would require heavy cables such as those used on the battery for the vehicle doing the charging.I also believe it would take more time than a trip across town to charge up to batteries,unless that trip takes over an hour.Another thing to keep in mind is voltage loss over a given distance.DC doesn't like to travel very well.You could be getting 14.4 volts at the alternator and only seeing 11 or 12 volts at the batteries in the boat.Bigger wiring and a dedicated alternator will solve this.That's why some RV's have more than one alternator and an on board charger.It would be unfortunate for some one to damage their truck,boat,and/or equipment because of a gimick.</p></blockquote><p></p>
[QUOTE="ben2go, post: 49845, member: 751"] I had 2 batteries in my car.1 for the car and 1 for the entertainment system.I also had a 110 amp alternator specificly built for that.A standard truck alternator would have a hard time charging batteries,maintaining a charge shouldn't be a problem.Charging 2 batteries would require a second alternator putting out around 40 amps.The distance to the batteries would require heavy cables such as those used on the battery for the vehicle doing the charging.I also believe it would take more time than a trip across town to charge up to batteries,unless that trip takes over an hour.Another thing to keep in mind is voltage loss over a given distance.DC doesn't like to travel very well.You could be getting 14.4 volts at the alternator and only seeing 11 or 12 volts at the batteries in the boat.Bigger wiring and a dedicated alternator will solve this.That's why some RV's have more than one alternator and an on board charger.It would be unfortunate for some one to damage their truck,boat,and/or equipment because of a gimick. [/QUOTE]
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Off The Water
Watering Hole
charge your trolling batteries with your truck
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