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battery charger
#1
We just up graded elect. trolling motor to a 24 volt from 12volt.
Need a 3 bank onboard charger 2 for the 24 volt and 1 for the cranking batt. Anyway to the point.
What brand and charger have you guys had success with. Looking It looks as though the genius is a good one but they don't claim to support 24 volts.
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#2
You still use a 12 volt charger for your 24 volt system. No need to "support 24 volts."
You charge each 12 volt battery. I've used the Dual Pro's for years. I use a two-bank for my two trolling motor batteries, and a separate one-bank for my starting battery. I charge my trolling motor batteries every day, and they are matching deep cycle batteries. I only charge my starting battery ocassionaly, and its different than the trolling motor batteries. My trolling motor batteries are in my bow, starting battery in the stern. Here's a three bank one: [url][https://www.amazon.com/Dual-Recreation-T...3+bank/url]
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#3
[font "Comic Sans MS"][#800000]First, I have to ask - why do you think it necessary to have an on-board charger for your cranking motor? I ran my last boat for 11 years and used the original cranking battery for the first 8 years without it EVER failing to start my outboard motor. I only replaced it in year 9 because of its age, not because it stopped working. [#800000]Most 2 & 4 stroke motors [/#800000][#800000]use a permanent-magnet alternator design utilizing a flywheel, a stator and a rectifier or regulator assembly. This allows for a simple, compact system without the need for belts, pulleys or mounting brackets. Certain Mercury outboards (OptiMax & Verado) are the exceptions, as they employ an externally mounted alternator assembly that looks and operates similar to the one in our cars. Having a separate built-in charger for the cranking battery is not needed.[/#800000][/#800000][/font]
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[font "Comic Sans MS"][#800000]I use the Cabela's 2 bank system for my 24 volt (2 12 volt batteries in series) electric trolling motor. Each of the two lead sets goes to a separate battery. I had a 1 bank system on my old boats 12 volt setup for about 3 years and it never failed. You can buy the Minn Kota system for more money, but the Cabela's brand will probably work just as well for less cost. After draining the trolling motor down to where the electric motor prop stops turning and charging overnight, the batteries are at 100% each morning. The Cabela's system (as well as the Minn Kota) has built in circuitry that prevents over charging which isn't true with a lot of the car battery chargers that ca be used to charge your boat batteries. I would recommend you buy the 2-bank system that best fits your wallet and don't look back. [cool][/#800000][/font]
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Bob Hicks, from Utah
I'm 83 years young and going as hard as I can for as long as I can.
"Free men do not ask permission to bear arms."
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#4
[quote PACMEN]We just up graded elect. trolling motor to a 24 volt from 12volt.
Need a 3 bank onboard charger 2 for the 24 volt and 1 for the cranking batt. Anyway to the point.
What brand and charger have you guys had success with. Looking It looks as though the genius is a good one but they don't claim to support 24 volts.[/quote]

A 36-volt system will utilize a 3 bank charger putting out 12 volts and usually 10 amps per bank, there is no such thing as a 24-volt per bank charger. As for brand I have used ProMariner on both of our boats and had zero issues. So you will have 3 pairs of wires, 2 pairs to the trolling batteries and the 3rd pair going to the cranking battery.
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#5
Check these guys out.
https://www.pulsetech.net/

You'll find a set up for 12, 24, 36, 48, multiple banks, etc.
Just got one for my 48v golf cart batteries this winter and got one of the power pulsers to keep on it all the time. Unfortunately I can't tell you if my batteries are better than they were last fall for a few more weeks.
Charger is a nice little setup and the tech seems to have been proven. Lots to read up on the desulfating and there are other options to look at as well regarding that.
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#6
Dual Pro's are awesome.
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#7
I've used the NOCO Genius Gen2, 20 amp, 2 bank. It charges both of my batteries and is easy to install. You do NOT need a 24 volt charger. The 20amp, 2 bank has a positive and negative lead that goes to each battery separately. The charger is computer controlled and WILL NOT overcharge your batteries. I leave mine connected and plugged in 24/7 ALL winter when I'm not using the boat. Keeps the batteries topped off and ready to go. I connected the NOCO Genius to a recessed MALE 120v Plug that I installed on my boat, and all have to do is run a extension cord to my boat and plug it in. No opening hatches, connecting clips, etc. If you search on line you can find discounts or sale prices for the NOCO Genius. I've had mine for 8 years and have had no problems at all.
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#8
National Battery Sales in West Haven carries the Noco line of chargers. I have also seen them Amazon.
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#9
Have 2 bank charger now but am looking to go 3 bank. 2 for the troll motor and one for the crank.
I like the idea of cranking batt. being full up. I like to err on the side of caution.
I have often spent the day on the water and never seen another boat.
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#10
So you will have 3 pairs of wires, 2 pairs to the trolling batteries and the 3rd pair going to the cranking battery.

This is the plan.
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#11
Thanks for the comments!!!
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#12
[quote PACMEN]So you will have 3 pairs of wires, 2 pairs to the trolling batteries and the 3rd pair going to the cranking battery.

This is the plan.[/quote]

Yes.
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#13
Here's a novel solution to charging batteries in a boat. you can buy a Shauer 8 amp charger at Wally World for about $25. 3 chargers = $75. Add a breaker protected power strip = $15 and you have your 3 bank charger for about $100, vs $250-300 for the onboard systems. The chargers are automatic and will charge all your batteries in 6-7 hours. Takes a bit of work to hook them up, but lot's cheaper than the on board system. Also, if one dies, $25 for a new one, instead of having to replace a 250-300 dollar unit. My buddy came up with this for charging his 36 volt system on his boat. Has 4 of these chargers and a power strip. Takes less than 10 minutes to set it up or take down.
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#14
[quote PACMEN]Have 2 bank charger now but am looking to go 3 bank. 2 for the troll motor and one for the crank.
I like the idea of cranking batt. being full up. I like to err on the side of caution.
I have often spent the day on the water and never seen another boat.[/quote][font "Comic Sans MS"][#800000]Now harm; no foul. It's your money and you are free to spend it in any manner appropriate to your needs and/or desire. My cranking batteries are being kept fully charged by running either gas motor on my boat and I honestly don't see any need for the redundancy of using a separate charger on the crank batteries. I have no issue with anybody else doing so. Tight lines to you and I hope you have a great season this year.[/#800000][/font]
[font "Comic Sans MS"][#800000][fishin][/#800000][/font]
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Bob Hicks, from Utah
I'm 83 years young and going as hard as I can for as long as I can.
"Free men do not ask permission to bear arms."
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