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07-06-2017, 03:29 PM #1Junior Member
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Battery that cures the Mercury 300xs dragging starter woes (group 24 battery)
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07-08-2017, 09:49 AM #25000 RPM
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I need a group 24 replacement. Saw this one at Sam's Club.
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07-08-2017, 01:13 PM #3
Just go to Batteries' Plus, Advance Auto, AutoZone and buy a AGM marine battery. I replaced my Sears Marine AGM which was 7 years old and not bad yet. Just a preventive thing. I purchased top-post AGM only because it had date code 9months old at Auto Zone and AZ reduced the price to $50 from $200 when I commented on the date code. AZ has the terminals to convert for marine use. Also only think there are a few battery producers in the USA... so it's same battery different labels. Other than maybe the special batteries.
Last edited by Euroski; 07-08-2017 at 01:15 PM.
Checkmate 2002 Convincor 270 496 MAG-HO
2003 Cougar 22MTR w/300xs SOLD
90 21Skater w/300xs - sold
98 STV Euroski w/280 - sold
2006 Trailblazer SS 6.0l 395hp
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07-08-2017, 04:21 PM #4
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07-10-2017, 07:10 AM #5
I'm using this Exide AGM battery and although it's only rated to 930mca it has no trouble firing off the 300XS. AGM batteries have a capability called pulse current, it's a brief burst of current that can add another 25% which may explain why it doesn't have any issues. If, over time, my assumption is proven incorrect I'll need to find something else. Batteries are a consumable item so it will get replaced at some point.
Last edited by mjw930; 07-17-2017 at 10:19 AM.
Mark
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07-10-2017, 07:29 AM #6Screaming And Flying!
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I thought 24v cured it?
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07-17-2017, 10:12 AM #7
Just attach a Lithium jump starter right away and you'll never have a problem starting.
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07-17-2017, 10:19 AM #8
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