Sealine F36 Kad44 starter battery

Sneds

Sneds

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Would anyone know what amp hours and cold cranking amps I should go for for each engine?

Or total if wired in parallel?

Also, what would be OK for domestic, we are very rarely off shore power and when we are we turn the fridges down and use the lights sparingly

Also, what size, amps, for the new battery charger?

Thanks in advance for any input

Cheers
 
Last edited:
Sneds said:
Would anyone know what amp hours and cold cranking amps I should go for for each engine?

Or total if wired in parallel?

Also, what would be OK for domestic, we are very rarely off shore power and when we are we turn the fridges down and use the lights sparingly

Also, what size, amps, for the new battery charger?

Thanks in advance for any input

Cheers
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My pal has a F36 with kamd43 (similar engine to kamd44 but fewer valves) and the batteries are standard 110Ah
Many sealed so called leisure batteries have a good CCA rating so are dual purpose for starting and domestic.
 
Two X 110ah deep cycles will be fine for the domestic bank, but I am unsure as the the cca required to start a Kad44

Would I be better off having high cca batteries for starting and lower cca 110ah deep cycle for domestic?

I have read that the battery charger should charge at 25% of the rated bank, ie 110 x2 = 220 so each output of the charger should be 55a seems massive as most chargers seem to be 30a total?
 
It is a Phase 3 40 amp

Phase 3 being the brand not 3 phase the wrong the way round :-)

I have just looked at the purchase survey and it says 3 X 105 Amp plus a separate starter battery but doesn't id the starter battery

Will have to look at the weekend but just trying to get a heads up
Will a 30A charger be ok, I guess it will just take longer to charge than a 40A one?

Still unable to sus out how many cca for the starter battery?

Don't want to be
Iight on that
 
Sneds said:
Will a 30A charger be ok, I guess it will just take longer to charge than a 40A one?
Click to expand...

Works for me. I seldom see more that 15 amps being pushed through my bank of 3 domestics unless I have been really abusing my batteries. A slower charge is better for them anyway AFAIC
 
Finally got down to the boat to find one starter battery, 667cca, absolutely bone dry

Topped it up with deionised water, rebooted the battery charger(turned it off and then back on) left for 12 hours and the engine fired into life

Let it run for 5 minutes and then tried the port engine, fired up first time

All good, but one thing still not clear, the port battery isolator, turned off, mean no dash lights to that engine, the starboard isolator turned off ditto

So I guess I have one starboard engine battery on its own and the other three, whilst being domestic also start the other engine?

Lesson learnt - check the electrolyte (water) level in your batteries, assuming you don't have the sealed type

I am unsure as to buy four sealed "dual purpose" batteries or to buy one starter battery, 1000cca and three sealed domestics at 110ah and 800cca
 
Iain, my Azi has 2x 115 ah domestic batteries (sealed since I cooked one a couple of years ago). Starter is a single huge battery, starts both engines, which I top up every 3 months or so. Takes at least a pint of fluid. Also a smaller battery that starts the gennie, normal car sized.
 
Sneds said:
So I guess I have one starboard engine battery on its own and the other three, whilst being domestic also start the other engine?
Click to expand...

I believe that is the usual Sealine way - the same principle on my F33.
You probably have link switch on the switch panel over the lower helm which joins the two banks together if needed in an emergency.
 
Iain,

I replaced the domestic batteries in our F36 at the beginning of the last season and managed to fit 4 110ah sealed batteries. The charger seems to have no issues with topping them up and to give them a better chance of survival (we have a trot mooring permanently in the summer) I changed all the bulbs for warm white led’s which has made a huge difference. The starboard engine appears to have a bank of 2 batteries for starting and the domestic bank is used to start the port engine.

Hope that helps.
 
Bigplumbs said:
That looks a very good pair of batteries at an excellent price
Click to expand...

I have them for my domestic bank since June 2016 . They also start the starboard engine.
After the first winter they were a bit lazy but I re-made the electrical connections and gave them a boost/pulse charge on my little Aldi smart charger , which goes to a higher voltage than my on board charger, and they have been good since then.
For that price if they last another year I will consider they don't owe me anything.
 
In the end I went for three X Exide 142ah each for domestic and starboard engine along with a Hankook 1,000cca 110ah, non deep cycle is a starter battery, for the stand alone starter
Wonder if I could have got away with the 4 X 110ah, reckon so and saved £165 to boot
Got some LEDs on order aswell so will soon be lit up like a Christmas tree!
 
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