How can I charge my 24 volt trolling batteries off of my 12 starting battery while going across the water??
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How can I charge my 24 volt trolling batteries off of my 12 starting battery while going across the water??
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Curious as to why there would be a need to? My two trolling batteries are topped off before the boat goes is in the water. Then what ever run time charges my cranking battery (electronics) while my trolling batteries lay idle. Not trying to be difficult here, but how long are your trolling batteries lasting you and what kind of fishing are you doing?
They are full when I get to the lake. but if I long line for 7-8 hours they will not charge all the way back up that night before the next morning of fishing.
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Need a bigger onboard charger Noco Genius 30amp, 10 amps per 3 banks get you back going overnight. If your batteries won't hold charge then of course that's bad batteries.
I have a 2 bank charger and 6 amps per bank. batteries are not even a year old
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Get a new charger. You should be able to charge 2 batteries in 8-10 hours. You might could run some wires from cranking battery to trolling batteries and that will recharge them while your going across lake. I would go with new charger.
Group size batteries and brand?Quote:
Originally Posted by featherhead
I charge my 2 battery's at the same time with a 10 amp charger takes about 8-10 hours.
interstate group 27
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you need to change your batteries !!! if you are trolling that many hours you need to go to a Group 31 battery or minimum Group 29s !!!
Need bigger batteries, I'm convinced is your issue. I would go up to a group 29 or better yet 31's if you got the room. I can pull cranks on an 18' fiberglass boat for 8 to 9 hours on two Interstate 29's. Takes 15 or 16 hours for my 5amp charger to fully charge those 29's if run completely dead. A 10amp will charge them overnight in 6 - 8 hours.Quote:
Originally Posted by featherhead
I use to have that problem,dualpro charger 15amps per bank,problem solved
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What blue ball said.
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DO YOU HAVE THE PRECISION 212 ? I fished 7 hrs. and it takes mine about 5 hrs. to be fully topped back off . Attachment 305829Quote:
Originally Posted by featherhead
If you have the room, go for golf cart batteries. Minn Kota does make an onboard alternator tho, that takes power from your alternator and charges your trolling motor batteries. About $150 or so
Group 27 batteries are not sufficient for that type of fishng!
Go to the 15 amp charger, I got one you can get on the cheap and try it before changing your batts out.
The charging system on your outboard isn't designed to literally recharge your batteries, certainly not repeatedly and if you attempt to do so in time it will fail. Furthermore, I don't think the time your running across the lake would make any significant difference anyway. If your batteries won't recharge overnight then I agree that your charger is to small. I use 15 amp dual pro chargers, one is 14 years old and still going the best money can buy in my opinion.
Everybody always suggest group 31s. However, I barely have room for 2 27s in my express h51. Poor folks have poor ways. I try to stretch my time out by tilting my outboard and running downwind when feasible.
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Take the amp hour rating and divide by charger amp output.. then add 10 percent.
That’s how long it will take to charge your batteries from dead.
You want to charge them as slow as possible but at the same time fast enough to be ready from day to day.
I suggest atleast 29’s with 120 amp hour rating and a 15 amp per bank charger.... and also the chargers with battery equalizers. They’ll add a year to you having to replace batteries.
I say this because I battled all that years ago. Fishing all day and batteries not being ready to go next day. It’s aggravating.
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charger is too smallQuote:
Originally Posted by featherhead