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Best cranking/starting Battery

Old 04-18-2020, 03:13 PM
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Default Best cranking/starting Battery

Whatís the best bang for your buck for marine cranking/starting batteries? Group 27 or larger. I donít want dual purpose or deep cycle
Old 04-18-2020, 04:32 PM
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IT depends on what your electrical needs are. My old boat I used to use Group 31. They are slightly larger, but still fit into the same battery box as the group 27's but offer more power for not much more $$.

Just my opinion.
Old 04-18-2020, 06:31 PM
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Originally Posted by Recovery Room View Post
IT depends on what your electrical needs are. My old boat I used to use Group 31. They are slightly larger, but still fit into the same battery box as the group 27's but offer more power for not much more $$.

Just my opinion.
ive got 3 group 31 deep cycle agmís now but my f225ís arenít keeping them topped off. Someone suggested that those engines require cranking batts so just looking for suggestions on brands that are reasonably priced
Old 04-18-2020, 10:45 PM
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Deep cycle batteries are not designed to be cranking batteries. Cranking batteries have thinner plates so they can release large amounts of amps relatively fast for cranking your engines and they have a higher acceptance rate for quick charging. Deep cycle batteries have much thicker plates designed for slow release but for lasting longer between charges. Deep cycle batteries can be used to start an engine but they are not very efficient at it and if used all the time for that it can damage the batteries. Deep cycle batteries also take longer to charge than starting batteries, It sounds like yours are not getting fully charged between cycles. This may be because the alternators aren't putting out enough amps to charge three deep cycle batteries, or the batteries are going bad due to misuse.
Old 04-19-2020, 05:41 AM
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I highly recommend the Interstate MHD group 31's. Sealed battery with plenty of CCA as well as reserve amp minutes. I had 3 the trolling batteries lasted 4 full seasons and the cranking battery is still good going on year 6. About $150 or less.
Old 04-19-2020, 07:09 AM
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Originally Posted by Viking16 View Post
ive got 3 group 31 deep cycle agmís now but my f225ís arenít keeping them topped off. Someone suggested that those engines require cranking batts so just looking for suggestions on brands that are reasonably priced
Based on your thread last month,
in which you described a 26' boat with batteries in the console,
connected by extension cables from lugs at the stern,
you are blaming the batteries
for a problem which is likely bad cables, bad cable connections, or both.

Given the running voltage values you provided in that thread,
its improbable that the batteries are not being charged.

Far more likely that during cranking,
you have a significant voltage drop to the starter.

You have made no mention of testing the voltage at the engine during cranking,
nor of any voltage drop tests performed on the cabling and connections,
under the load of cranking.

Stop imagining mythical differences between 'cranking' and 'deep cycle' batteries,
and perform those practical tests.

Old 04-19-2020, 07:30 AM
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Originally Posted by Viking16 View Post
Whatís the best bang for your buck for marine cranking/starting batteries? Group 27 or larger. I donít want dual purpose or deep cycle
That makes absolutely no sense.
Old 04-19-2020, 07:41 AM
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Been using the Sea Hawk batteries and no complaints.Definite good bang for the buck.
Old 04-19-2020, 08:07 AM
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Iíve had an opportunity to purchase 2 batteries in the last few weeks and in doing a ton of research and price shopping Iíve found the best deal in the county! If you need an automobile or boat battery, I suggest an Interstate Batteries from Costco. They are sold in the tire center so you donít even have to enter the store to purchase one.

In comparing prices and warranties from all of the local auto parts stores, I discovered that Costco by far has the best prices and the longest full replacement warranty by far.

Example 1: Auto battery Type 96R
  • Local auto parts deal: $169 for store branded battery with 2 year full replacement warranty
  • Costco: Interstate Batteries $95 with 3 year full replacement warranty

Example 2: Boat battery Type 27 Deep Cycle
  • West Marine: $179 for store branded battery, 1 year full replacement warranty
  • Costco:Interstate Batteries $88 with 1 year full replacement warranty

A few years back I had the opportunity to test the warranty with a boat battery I had purchased from Costco, I returned the dead battery actually more than one year from my purchase date, and the Costco Associate told me to just go get another one at no charge.

Save yourself lots of money the next time you need a car or boat battery!

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