New leisure battery advice.

[ripvan1]

Thanks Vic - I think

For a small motor cruiser with minimal power needs would 115ah and cca figure of 1000 suffice (engine is watermota pre x flow based on ford anglia 105) ?

 

[VicS]

Thanks Vic - I think

For a small motor cruiser with minimal power needs would 115ah and cca figure of 1000 suffice (engine is watermota pre x flow based on ford anglia 105) ?

The CCA is more than adequate. The ah capacity needed depends on on your power useage when the engine is not running.

I should think the Ford Anglia probably had a battery with a capacity perhaps as little as 45 Ah.
In those days CCA was never mentioned but an ordinary starter battery of that capacity would these days typically have a CCA of around 350

If you are using one battery for all purposes you will need to ensure that the battery has a large enough capacity to still be able to start the engine after a period of domestic use.

A separate starter battery, or a reserve battery, charged perhaps via a VSR, could be a sound investment if you do not have the ability to start the engine by hand or an outboard back up engine

 

[ripvan1]

Thanks again,

power usage minimal (no gizmos) just lights, nav and interior, bilge pump that's it - daysailing and parking overnight only - would you recommend 1 large or 2 small ?

 

[VicS]

Thanks again,

power usage minimal (no gizmos) just lights, nav and interior, bilge pump that's it - daysailing and parking overnight only - would you recommend 1 large or 2 small ?

Id think a 110 ah battery more than adequate.

If you opt for a separate starter battery make it around 60 Ah, reducing the size of the domestic battery a bit if available space dictates.

You mention bilge pump. Is that used much? Not on auto all the time is it? if so that would probably require a larger battery.

 

[misterg]

Does this watermota engine need 2 x 12V batteries for starting on 24V?

Some did, I believe.

Andy

 

[ripvan1]

Thanks muchly, that all makes sense - re the bilge pump, haven't installed yet (restoration) but take your point.

 

[VicS]

Does this watermota engine need 2 x 12V batteries for starting on 24V?

Some did, I believe.

Andy

That I think is the (1600 cc ??) Seapanther although later ones where fitted with a starting aid heater I believe.

 

[mcframe]

Thanks for the replies.

A new battery and solar panel will be added to the already massive/expensive list. I do have a wind turbine but doesn't seem to anything, I prefer solar panels tbh.

Doesn't *seem* to do anything???

First, get a a NASA battery monitor, then you can obsess over it.

After that, consider an alternator regulator, bridging the two 85Ah house batteries & adding a start battery, VSR, 20W solar panel and *then* you can fit a fridge & heating (& IKEA 12DC LEDs).

Maybe you could even join me in being able to bore about Hunter batteries at county level ;-)

 

[Kelpie]

Been shopping around for a new battery myself... I've found cheap 'sealed calcium' ones claiming 250 cycles... or for a bit more I can find ones claiming 500 cycles... is 500 as good as it gets? What sort of cycles do the posh batteries do?

Um, a wee bump for my query here... how many cycles can you expect from a good battery?