Expensive Battery Thoughts

[tranmkp]

That’s right you changed to Lithium

Part of the issue I’m having is all the 31’s have the round terminals - the boats current batters have spade/tab terminals -


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[CruisingElvinRay]

These can help in that situation. https://www.boatsteer.com/battery.html


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[Submariner]

These can help in that situation. https://www.boatsteer.com/battery.html
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Do they make these in tin plated copper?
In salt water, exposed copper is going to corrode, cause resistance and get hot. All bad.

 

[CruisingElvinRay]

These can help in that situation. https://www.boatsteer.com/battery.html
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Do they make these in tin plated copper?
In salt water, exposed copper is going to corrode, cause resistance and get hot. All bad.

I don’t believe so. I’ve not had any corrosion issues.


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[Cutwater28GG]

i replaced mine with the universal agm's that the factory used to install. They ship direct from amazon for free...

https://www.amazon.com/gp/product/B0088L5AKS/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

now $239

 

[tranmkp]

I just finished the universal ones from the factory - at a good price from Amazon

I did find some surprises - water in one of the aft trays from most likely a poor hatch gasket - and on the start battery the connection was a little loose and the nylon in the lock nut had melted .

Also found the second channel on the solar controller was out - no idea why but ordered a new sun saver duo.

Was talking with my tech and I asked is there a way to check discrete battery voltage - reply was not so easy with the dual ACR’s - not easily - easy way is just squirm and do each batt by mm


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[CruisingElvinRay]

ACRs only close when charge current is present, so measuring the state of charge when resting is relatively straightforward.


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[tranmkp]

Thanks - but my thought was it would be nice to have a rotary switch to a meter for each battery…


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[Craigmconrad]

To monitor individual battery banks, I use the Victron Battery Sense on the Thruster, Starter and House. Relatively inexpensive way to monitor the individual battery banks using an app on your phone or tablet.