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Discussion Starter · #1 ·
There are 5 batteries total on the boat. 2 of them are large deep cycle lookin ones, and the 3 others are normal size ones. I am wondering how these batteries are hooked up and used. I am guessing without the owners manual that 2 are for accessories, 2 for starting and 1 for emergency start. The only part I am confused on is the cold crank amps and mins reserve. The 2 large batteries only list the CCA @ 1000 @ 32F. The other two are 745CCA @ 32F with 175 mins reserve. The one lone emergency battery is rated at 1000 CCA @ 32F.
Now looking at the new batteries they have starting batteries and accessory batteries. The batteries currently on board do not say anything about starting and accessory on them. So I am trying to figure out how they may be used. The accessory battery they offer only lists its min reserve (205) and no CCA is listed anywhere on it like the ones currently on board. The starting batteries they have are rated at 1000 CCA with 115mins reserve. I am thinking to get 3 of the starting batteries and 2 of the reserve batteries. If anyone can make sense of all this please help. Always had the marina replace the batteries and this year doing it myself so any help is appreciated. Gonna check the owners manual too!
 

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Bring a case of Bud and meet me at Metro.


They have 'dual' purpose batteries now too. Partly deep cycle and part starting.
 

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It's up to you as far as figuring out what batteries do what on your boat. I can help maybe a bit though.

CCA is determined by how the bettery will react in cold temperatures. With a fully charged battery, that's how much one can draw in the cold.

Minutes reserve has to do with how long the battery will last with a constant draw, (typically 20 Amps) you can also translate that into doubling the minutes and cutting the amperage in half or doubling the amperage and cutting the minutes in half.

I hope that helps a bit.

also, if the batteries were replaced reecently, why do you want to replace them again??
 

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Discussion Starter · #4 ·
Wound up installing 4 deep cycles with 205min reserve @ 23amps. They start the engine fine. One starting battery with 1000CCA for the generator. The batteries were let to run down a few times too absolutely nothing and were losing their reserve capacity. They were prob about 3-4 years old. Everything seems cool with the new ones.
 
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