brians
Well-Known Member
Is it necessary to have a 'marine' starter battery or will a car battery do? Only difference I can see is the heeling over and possible spillage of battery acid.
Starter battery
- Thread starter brians
- Start date
hightech
Well-Known Member
If your battery is in a proper box like it should be then acid spills are contained and the battery properly secured.
In answer to your question though, either will do the job, lots of boats have "car" batteries.
In answer to your question though, either will do the job, lots of boats have "car" batteries.
Dave_Rolfe
Well-Known Member
No need for a specific boat starter battery. Try to keep the cell caps (or longest dimension) of the battery on a fore and aft line so when heeled the liquid inside does not run to one end and spill out. make sue you get a reasonable power battery also as you can't bump start a boat engine.
Refueler
Well-Known Member
[ QUOTE ]
Is it necessary to have a 'marine' starter battery or will a car battery do? Only difference I can see is the heeling over and possible spillage of battery acid.
[/ QUOTE ]
Certainly not ... bog standard car battery.
My boat has a truck HD battery for starting and a Leisure for domestics - making just under 200 A/hr total - either can do either job - start or domestic via the 1-both-2-off switch.
Never had need for special batterys. Most of mine apart from the Leisure have come from Breakers Yards ... 5 - 10 quid a time.
Is it necessary to have a 'marine' starter battery or will a car battery do? Only difference I can see is the heeling over and possible spillage of battery acid.
[/ QUOTE ]
Certainly not ... bog standard car battery.
My boat has a truck HD battery for starting and a Leisure for domestics - making just under 200 A/hr total - either can do either job - start or domestic via the 1-both-2-off switch.
Never had need for special batterys. Most of mine apart from the Leisure have come from Breakers Yards ... 5 - 10 quid a time.
DJE
Well-Known Member
[ QUOTE ]
start or domestic via the 1-both-2-off switch.
[/ QUOTE ] Is this all you need to do to seperate the two batteries? I'm thinking about adding a dedicated starter battery to my boat so that both the existing 85Ah leisure batteries can be used for domestic purposes. The starting battery will be smaller than the leisure batteries and of a different type for high current rather than deep discharge. Will it be Ok to charge all three in parallel with no split diode or other clever charging arrangements?
start or domestic via the 1-both-2-off switch.
[/ QUOTE ] Is this all you need to do to seperate the two batteries? I'm thinking about adding a dedicated starter battery to my boat so that both the existing 85Ah leisure batteries can be used for domestic purposes. The starting battery will be smaller than the leisure batteries and of a different type for high current rather than deep discharge. Will it be Ok to charge all three in parallel with no split diode or other clever charging arrangements?
PeterGibbs
Well-Known Member
You are correct. Providing cells are not filled to the top there is minimal risk in regular sailing use that acid will escape a normal wet battery, whether auto or marine sticker on the top!
PWG
PWG
Tranona
Well-Known Member
Suggest you go for a system such as the BEP Marine switch cluster that uses a VSR to split the charge. Details from Merlin www.power-store.com who will also design you a wiring diagram to suit. other split systems available, but IMHO this is the neatest.
Refueler
Well-Known Member
[ QUOTE ]
[ QUOTE ]
start or domestic via the 1-both-2-off switch.
[/ QUOTE ] Is this all you need to do to seperate the two batteries? I'm thinking about adding a dedicated starter battery to my boat so that both the existing 85Ah leisure batteries can be used for domestic purposes. The starting battery will be smaller than the leisure batteries and of a different type for high current rather than deep discharge. Will it be Ok to charge all three in parallel with no split diode or other clever charging arrangements?
[/ QUOTE ]
I do ... so why not ... alteranator will supply what's needed.
[ QUOTE ]
start or domestic via the 1-both-2-off switch.
[/ QUOTE ] Is this all you need to do to seperate the two batteries? I'm thinking about adding a dedicated starter battery to my boat so that both the existing 85Ah leisure batteries can be used for domestic purposes. The starting battery will be smaller than the leisure batteries and of a different type for high current rather than deep discharge. Will it be Ok to charge all three in parallel with no split diode or other clever charging arrangements?
[/ QUOTE ]
I do ... so why not ... alteranator will supply what's needed.
DJE
Well-Known Member
When you've been reading these fora for a while batteries appear to be one of the darker of the black arts. But our proceedure at the moment is start on Battery 1, switch to Both when engine is running, switch to Battery 2 when engine is stopped. So I suppose we're just running a manually operated battery splitter. Sticking with the existing switch will certainly make the wiring easier and will save me a tidy sum.
