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bad gut feeliing about my boat batteries... #12729737 04/25/18 04:36 AM
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timbertoes Offline OP
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Having let the boat sit for over a year+ ..
When I charge the batts using the onboard charger, even after getting a green led then three, four days later, start charging again, almost full bank of red leds, takes all night to go green again.

Interstate batteries, 4 years old.

Motor starts fine, spins fast. still.. kinds tough to spend another 200 on batteries dang it.
But with a trip planned, better safe than sorry?
anyone seen this charging behavior ? I have to admit I kinda know its not right.

Re: bad gut feeliing about my boat batteries... [Re: timbertoes] #12729789 04/25/18 10:47 AM
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dimitri Online Content
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try topping them off with a standard charger, then let them sit overnight , then hook the onboard charger to them and see if anything changes. i would also top off the water in them after using the standard charger.

btw im no expert on batteries but in 9 years of boat ownership i have had pretty good LUCK with batteries. now catching fish is another story......


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Re: bad gut feeliing about my boat batteries... [Re: timbertoes] #12729816 04/25/18 11:44 AM
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CADD Offline
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I wouldn't expect them to be good, about 3 to 4 year's is it for an average batter and letting them sit is hard on them.

My thoughts are buy fresh batteries at the store, by as cheap" as you can and replace often... 3 to 4 year's


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Re: bad gut feeliing about my boat batteries... [Re: timbertoes] #12729817 04/25/18 11:45 AM
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Bob Landry Offline
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Go to Harbor Freight and pick up a resistive load tester for around $12. Charge your batteries for 24 hours, let rest for 24 hours, then load test. If the needle doesn't stay in the green, you have a bad battery, probably a weak cell drawing down the others.
You can do better than Interstate batteries.


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Re: bad gut feeliing about my boat batteries... [Re: timbertoes] #12731431 04/26/18 11:46 AM
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Hog Jaw Offline
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New Battery time

Re: bad gut feeliing about my boat batteries... [Re: timbertoes] #12731820 04/26/18 03:10 PM
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ssmith Online Content
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there is a reason most marine batteries have a 1 yr warranty

Re: bad gut feeliing about my boat batteries... [Re: timbertoes] #12732660 04/27/18 02:08 AM
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smooth move Offline
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how's the water level in the batteries? dry cell will make the battery not charge.


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Re: bad gut feeliing about my boat batteries... [Re: Hog Jaw] #12733792 04/27/18 10:50 PM
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Originally Posted By: Hog Jaw
New Battery time


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Re: bad gut feeliing about my boat batteries... [Re: timbertoes] #12734360 04/28/18 03:19 PM
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texcajun Offline
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For what it's worth, I manage to get pretty good use out of my batteries after following advice I got here on TFF years ago.

Like most of you I have an on-board charger, but rather than plugging it straight into a wall outlet, I have it plugged into a garden timer that only comes on for 1.5 hours each day. I was eating through batteries pretty quickly even when they were connected to a nice Dual Pro charger that supposedly dropped the charge to nil when the batteries were topped off. I got 6 years out of my last set of Interstate greenies using the 1.5 hour a day charge cycle time.


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Re: bad gut feeliing about my boat batteries... [Re: timbertoes] #12736582 04/30/18 04:17 PM
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timbertoes Offline OP
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thanks for replies!
Battery's held up fine thus weekend... but I am pretty sure carbs are needed some love.. would bog and quit trying to hit 2500-3K rpm.
Changed fuel line, its fresh gas, but I suppose there is too much internal build up of gunk.
I have zero boat fixing money too, lol.

Last edited by timbertoes; 04/30/18 04:18 PM.
Re: bad gut feeliing about my boat batteries... [Re: timbertoes] #12744143 05/05/18 12:24 PM
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dimitri Online Content
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get a small gas can and dump a can of seafoam in a gallon of gas and hook the fuel line directly to the can. run on muffs. could possibly help and wont hurt any worse than it is.

fyi: add oil to gas too if you premix


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Re: bad gut feeliing about my boat batteries... [Re: timbertoes] #12744216 05/05/18 02:15 PM
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Trebor Neil Offline
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SEA FOAM!!!

STABIL!!!

Last edited by Trebor Neil; 05/05/18 02:16 PM.

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