500 CCA Battery Required for a 30HP Fuel Inject, Why

[jackreno]

I have a 2015 30hp Suzuki 4 stroke on a 11 foot rib boat, room and weight is always a issue in small boats, with that said why does the 30hp require a car size battery, I had a 1200 cc motorcycle twice the motor size and over twice the HP and it only needed 250 CCA batt, many jet skies also have small motorcycle type batteries with more HP, but the Suzuki requires a minimum of 512 CCA for the 30hp motor. [ that is a heavy car size battery ? ]

Also the 30hp fuel inject does not even need a battery to operate, can be pull started as well with no battery but than why such a large 512 CCA for the starter, I can start a diesel truck with that size.

So has anyone used a smaller CCA batt with long term success and also a AGM type as well..

[2014DF25ARS]

I am using a AGM "powersports" battery (jet ski battery) with my DF25A with no problems for a year now. Don't know the CCA offhand, but it's much lower than 500. Nice compact battery for my small boat. I can send details later.

[jackreno]

I am using a AGM "powersports" battery (jet ski battery) with my DF25A with no problems for a year now. Don't know the CCA offhand, but it's much lower than 500. Nice compact battery for my small boat. I can send details later.

Thanks for the reply, you probably have 200 to 250 CCA as to the batteries I was looking at Walmart for Jet Skies and large motorcycles, also I am going with a AGM so no acid issues down the road/river..

Just don't know why the Suzuki manual calls for a 512 CCA battery, it must weight about 65 lbs.

[jackreno]

Lithium batteries cost have came way down over the past 2 years I was looking at this 300 CCA Lithium battery made for power sports and boats, it only weights 2 lbs and cost $199.00

2 lb battery damn that's lite..

12V, 300 LCA Lithium Engine Start Battery

Here is a YouTube video about the battery, I think I am going with this.

https://youtu.be/P9nAbmkAKGo

[2014DF25ARS]

I'm using the largest AGM powersports battery I found at Walmart. About $100 as I recall.

[redlowrey]

I have a 2015 30hp Suzuki 4 stroke on a 11 foot rib boat, room and weight is always a issue in small boats, with that said why does the 30hp require a car size battery, I had a 1200 cc motorcycle twice the motor size and over twice the HP and it only needed 250 CCA batt, many jet skies also have small motorcycle type batteries with more HP, but the Suzuki requires a minimum of 512 CCA for the 30hp motor. [ that is a heavy car size battery ? ]

Also the 30hp fuel inject does not even need a battery to operate, can be pull started as well with no battery but than why such a large 512 CCA for the starter, I can start a diesel truck with that size.

So has anyone used a smaller CCA batt with long term success and also a AGM type as well..

The reason is simple it's called voltage drop.

[jackreno]

The reason is simple it's called voltage drop.

Yep but its still a heavy battery, so I just ordered a 12 volt 480 CCA Detran lithium iron phosphate battery that only weights 4 lbs from Amazon for $200, its just a starter battery, I don't need a deep cycle for my setup, sure going to loose a lot of weight in the back of my boat and gain more room, will let you all know how it goes.


https://youtu.be/oxMFRLPbZYQ

[2014DF25ARS]

I finally had a chance to check my battery. I use an AGM Everstart ES16LBS with my 2014 DF25A. Best as I can tell it has 325 CCA. My electric-start motor starts instantly every time, so I've never had the sense that it was starved for current. Time will tell the lifetime of the battery.

[jackreno]

I finally had a chance to check my battery. I use an AGM Everstart ES16LBS with my 2014 DF25A. Best as I can tell it has 325 CCA. My electric-start motor starts instantly every time, so I've never had the sense that it was starved for current. Time will tell the lifetime of the battery.

Thanks for the reply, you can see my post above and see what I just ordered, I think Suzuki just wants to make sure we have enough cranking power, but like your motor and mine we don't need a battery to start it, it has a built in capacitor to charge the EFI system, so a big heavy battery with lots of CCA is not necessary.

My new battery is suppose to only weight 4 lbs, that is going to save some weight in the back of my boat.