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#1
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Bow thruster charging circuit
I wired up a new Lewmar 12v bow thruster and put a battery right next to it to
minimize cable size. The boat has 4 pairs of 6v batteries all charged with an older Freedom 20 inverter/batt. charger with no separate float charge output. How can I charge the thruster batt. without it drawing from the ships banks. I'm thinking a batt. isolator won't work because the current flow is in the same direction. Any solutions? The boat is a 45 ft. 20yr. old Ferreti sailboat with twin Mercedes diesels, a wiring challenge to say the least. Thanks Ken |
#2
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Bow thruster charging circuit
I'd just buy a separate small charger.The thruster is only
operated intermitantly and a small charger should do the trick. I have friends that have done the same with a LectraSan with good results. The downside of having a separate battery is that you are limited by the capacity of that battery. My thruster draws about 80A but is connected using the heavy wire. I only run it when the engine is running so power is not a limitation. DOes the cost of a separate battery and charging system offset the cost of the wire? Doug s/v Callista "KNebulon" wrote in message ... I wired up a new Lewmar 12v bow thruster and put a battery right next to it to minimize cable size. The boat has 4 pairs of 6v batteries all charged with an older Freedom 20 inverter/batt. charger with no separate float charge output. How can I charge the thruster batt. without it drawing from the ships banks. I'm thinking a batt. isolator won't work because the current flow is in the same direction. Any solutions? The boat is a 45 ft. 20yr. old Ferreti sailboat with twin Mercedes diesels, a wiring challenge to say the least. Thanks Ken |
#3
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Bow thruster charging circuit
The float charge output that is available in the newer Freedom inverters is
called the "Echo Charge" and it is available as a separate unit, cost is about $119 and its the size of a couple of cigarette packs. It can put out a charge of up to 15 Amps and echoes the charge voltage of the main bank. I think it would work very well for your application. Let me know if you have difficulty finding one, I have some available. Peter Kennedy Peter Kennedy Yacht Services Marine Electrical Systems www.pkys.com "KNebulon" wrote in message ... I wired up a new Lewmar 12v bow thruster and put a battery right next to it to minimize cable size. The boat has 4 pairs of 6v batteries all charged with an older Freedom 20 inverter/batt. charger with no separate float charge output. How can I charge the thruster batt. without it drawing from the ships banks. I'm thinking a batt. isolator won't work because the current flow is in the same direction. Any solutions? The boat is a 45 ft. 20yr. old Ferreti sailboat with twin Mercedes diesels, a wiring challenge to say the least. Thanks Ken |
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