Thread: What setting for charging my starting battery

Youd have to tell us what battery it is first. Guessing just a basic lead acid. Youd know if it was AGM, it would have costed an extra $200

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Regular setting would be the correct one for a starting battery. And hopefully it's a digital charger, so you can set it to charge and not worry about boiling the battery fluid down below the plates.

Originally Posted by Kevin22

Youd have to tell us what battery it is first. Guessing just a basic lead acid. Youd know if it was AGM, it would have costed an extra $200

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Came on the boat I just bought. My first electric start.

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Its a maintenance free lead acid battery. "Regular" setting will work fine, make sure you read a manual on the charger to see if it can be left charging for long periods of time.

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If you haven't done anything to it, it looks pretty clean ... but it's also a 4/2021 mfg'd battery, so it's coming up on being 3yrs old. Keep it charged up after every day's use, charge it at least once a month during the periods of not using it, and you should get several more years of use out of it.

Originally Posted by CrappiePappy

If you haven't done anything to it, it looks pretty clean ... but it's also a 4/2021 mfg'd battery, so it's coming up on being 3yrs old. Keep it charged up after every day's use, charge it at least once a month during the periods of not using it, and you should get several more years of use out of it.

I think the previous owner just let the alternator from motor charge it and he didn't get out often so it might not be in the best condition. Not sure.

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Originally Posted by 10point

I think the previous owner just let the alternator from motor charge it and he didn't get out often so it might not be in the best condition. Not sure.

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My 90HP Merc 2strk will keep my Group 24 starter battery charged up if I run around the lake quite a bit (plus I let it idle while parking the truck & going to get the truck). But if I don't run around much, it still needs a little charging time to get back to "full" charge).

If you don't think he kept it charged full after each use or during down times, or if the big motor is not that big in HP, you probably want to test it before depending on it out on the water.

Originally Posted by CrappiePappy

My 90HP Merc 2strk will keep my Group 24 starter battery charged up if I run around the lake quite a bit (plus I let it idle while parking the truck & going to get the truck). But if I don't run around much, it still needs a little charging time to get back to "full" charge).

If you don't think he kept it charged full after each use or during down times, or if the big motor is not that big in HP, you probably want to test it before depending on it out on the water.

What's the best way to test? Take it to automotive store? It also has accessories hooked up to it. I did just buy a noco boost jumb start just to be safe.