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Post by smythley on Mar 9, 2017 14:27:19 GMT -5
I've got two "less than a-year-old" interstate deep cycle trolling motor batteries. I've got a built-in pro mariner charger that charges both of them. The charger says it's charging. The batteries say they are taking a charge, but after using the trolling motor for 20 minutes, they are dead. Any thoughts???
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Post by 31Airborne on Mar 9, 2017 15:16:51 GMT -5
You may have a dead cell on one of your batts. Quickest way to confirm/deny is to do a simple load test on them. The fix is easy - new batt.
You would be well-served in checking the output on our charger, too. I had an issue this year where all of the lights said batts were charging but the output on one bank was dead. A voltmeter will quickly tell you the output of each bank. This fix is a lil more involved, expensive (as I had to learn the hard way).
A couple things to keep in mind when buy batts:
- Always, always, always check the manufacture date. Sometimes it's a sticker on the side, sometimes it's a punch-out on the top (month/year). You'll often find batts that are a year or more old sitting on shelves. Buy the newest batt available. Don't do like I did and buy the 2-year-old unit that's been waiting on the shelf for some dummazz who's in a hurry to come get it. Just sayin' . . .
- Make checking water level in your [wet cell] batts a part of your pre- and post-launch routine. Water can seep out as temps rise and fall. It can also seep when you're riding on ruff water. If a cell is low add a lil [distilled] water.
- Check your connections routinely. This includes in-line fuzes!
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Post by smythley on Mar 9, 2017 15:31:26 GMT -5
I am assuming to test the output I would just test each battery while the charger is running and while it's off correct? Should see a couple volt difference?
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Post by steviejayvaughan on Mar 10, 2017 6:28:24 GMT -5
On my charger you'll see the voltage jump up over 14 volts when first hooked up then float charge around 13 volts.
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KB
New Member
Posts: 533 
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Post by KB on Mar 10, 2017 10:03:07 GMT -5
Take a multimeter with you after there fully charged check each battery for volts. Then run trolling motor for the 20 mins and when they poop out on you check them then for volts. I had this happen to me last fall with a 36volt system and I had one bad battery. It worked for me . Hope this helps
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Post by 31Airborne on Mar 10, 2017 13:45:46 GMT -5
Correct - check while on and off. The counsel above from KB is sound - this will help isolate a bad batt.
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Post by smythley on Mar 10, 2017 16:25:10 GMT -5
Solved!!! Thanks guys. One battery was shot. The other was fine. Frustrating to have an 8 month old Interstate 27 crap out completely.
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KB
New Member
Posts: 533
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Post by KB on Mar 10, 2017 18:05:50 GMT -5
Glad you found it and hopefully you get that one warranty.
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Post by Pete D. on Mar 15, 2017 8:11:04 GMT -5
Solved!!! Thanks guys. One battery was shot. The other was fine. Frustrating to have an 8 month old Interstate 27 crap out completely. Well the good thing is you will get a free replacement since its under a year old! |
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Post by 31Airborne on Mar 21, 2017 6:15:02 GMT -5
Yay!
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