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Posts: 52
| I have a 621 Ranger which has one cranking battery and 3 deep cycles for the trolling motor. The boat has a switch so I can set it to use both the cranking battery and the first deep cycle to help with cranking. I normally run it like that so I don't have problems with my electronics draining the cranking battery too fast.
The last few times when I have plugged in the charger I have noticed that the number 2 battery which is the first deep cycle lights up green within about 20 showing that it is fully charged. The other 3 batteries show that they are only partially charged and it takes a few hours or more until they show fully charged.
Does this mean that the deep cycle battery is bad or is there a problem with the charger? Also, since the first deep cycle battery is being used to help the cranking battery could the outboard motor be fully charging it while it is running. I have always run it this way but don't remember seeing this until recently.
I haven't noticed any performance problems with the trolling motor. The lights on the trolling motor also normally show that the batteries are fully charged.
Edited by muskyjeff84 8/28/2015 8:46 AM
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Posts: 194
Location: Lake Elmo, MN | Have a 620 with the 4 bank charger, and know this situation.
Go out and buy a good multimeter and Lowes or Menards (about 20 bucks) and check the battery when fully charged. The multimeter will tell you with 100% confidence if it's a battery issue. If so....easy to fix.
Edited by PSAGuy 8/28/2015 9:30 AM
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Posts: 1901
Location: MN | I'm guessing that if your first deep cycle is connected to the crank batt, then you might be getting some charging from the outboard alternator, like the crank battery is. |
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Posts: 20281
Location: oswego, il | I was going to post what Propster said, you are getting charged from the outboard. That is a 12v system and your trolling motor a 24volt? This would mean deep cycle 1 is not connected to 2 and 3, can't be running a different voltage setup. |
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Posts: 1209
| It is possible to have 36v and the cranking battery hooked to one of them and all will work. I would guess that you have either just noticed this year or your habits have changed to doing more running around and or in fairer weather. I would personally not run the batteries together like that rather I would use it like a jump start if the cranking battery failed. And I would buy a 460 charger to replace the three bank charger.
Note that if you have the switch set to connect the cranking battery while charging it would charge both and may damage the smaller less drained battery. If you have noticed any interference in your graphs or radio, that is most likely to be from the trolling battery being hooked up |
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Posts: 5874
| ToddM - 8/28/2015 11:52 AM
I was going to post what Propster said, you are getting charged from the outboard. That is a 12v system and your trolling motor a 24volt? This would mean deep cycle 1 is not connected to 2 and 3, can't be running a different voltage setup.
Not correct Todd. You can pull 12V of any battery on the boat. |
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