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krc
Joined: 06 Nov 2017 Posts: 113 City/Region: SF Bay Area
State or Province: CA
C-Dory Year: 2006
C-Dory Model: 25 Cruiser
Photos: krc
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Posted: Sun Dec 20, 2020 7:32 pm Post subject: Bad battery? |
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Twin hp90 (bf90a, carb) on c-dory 25. Starboard started right up. Port - "click click click" very rapid and loud. I figure solenoid or starter. Switch the emergency "parallel" on and started right up,. Battery is old - no punch out on the battery (new to me boat), but highest year was 2014 so at least 6 years. I assume, like a car battery, 6 years is plenty long so will do that replacement first before checking if there might be a lose connection, etc...
What is a good marine battery for these engines? |
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thataway
Joined: 02 Nov 2003 Posts: 20825 City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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Posted: Sun Dec 20, 2020 8:54 pm Post subject: |
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I use Sam's club Duracell "marine" batteries. It is best practice if you replace all batteries at the same time. If they are 6 years old, and one fails, fairly likely one of the others will also.
Interstate are often seen on factory boats.
Lifeline are in the more expensive side, but long lasting
Trojan is highly respected.
On the other hand, one of the longest lived batteries I have owned came from a small battery shop in Mexico--it looked as if they 'recycled' batteries, remelted the old plates and cast new ones...so you never know. _________________ Bob Austin
Thataway
Thataway (Ex Seaweed) 2007 25 C Dory May 2018 to Oct. 2021
Thisaway 2006 22' CDory November 2011 to May 2018
Caracal 18 140 Suzuki 2007 to present
Thataway TomCat 255 150 Suzukis June 2006 thru August 2011
C Pelican; 1992, 22 Cruiser, 2002 thru 2006
Frequent Sea; 2003 C D 25, 2007 thru 2009
KA6PKB
Home port: Pensacola FL |
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hardee
Joined: 30 Oct 2006 Posts: 12633 City/Region: Sequim
State or Province: WA
C-Dory Year: 2005
C-Dory Model: 22 Cruiser
Vessel Name: Sleepy-C
Photos: SleepyC
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Posted: Sun Dec 20, 2020 10:40 pm Post subject: |
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What ever you use, if it is a flooded Lead acid, use a "BatteryMinder" (specific brand), charger and conditioner. I had FLA batteries for 7 years, and though still good, replaced them even though they were still at 90-95%. When the boat is stored, they go on, and do a desulfation cycle every so often to keep the life in the battery. JMNTO.
Harvey
SleepyC
_________________ Though in our sleep we are not conscious of our activity or surroundings, we should not, in our wakefulness, be unconscious of our sleep. |
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ssobol
Joined: 27 Oct 2012 Posts: 3380 City/Region: SW Michigan
State or Province: MI
C-Dory Year: 2008
C-Dory Model: 22 Cruiser
Vessel Name: SoBELLE
Photos: SoBelle
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Posted: Mon Dec 21, 2020 12:52 am Post subject: |
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Might check the water level too. I once found the water in my batteries to be unexpectedly low. |
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thataway
Joined: 02 Nov 2003 Posts: 20825 City/Region: Pensacola
State or Province: FL
C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: thataway
Photos: Thataway
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Posted: Mon Dec 21, 2020 1:11 pm Post subject: |
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There are a number of good marine battery chargers which will prevent sulfation of battery plates by applying a high frequency pulsed DC current. There are pulse desulfators. which can be attached to the battery with a good charger in place: Example of this is PulseTech PowerPulse. (amazon has a cheaper version--I don't know if it works or not).
Noco Genius also has desulfation, Pulse Tech also has a battery charger / desulfator, |
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