"John Cairns" wrote in message
...
Yeah, the batteries are probably shot, they are dated '99. I have a deep
cycle battery charger and it didn't want to charge one of them before our
summer cruise.

That's what happened to me back in March. One of the batteries would go
flat very quickly after being charged. The other battery wasn't great,
either.
With hindsight, I can see that the deterioration was gradual. Last year, if
we left the fridge running overnight, then the house battery would be almost
flat by the morning. With the new batteries, I can start the engine on
the house battery in the morning.



I was reluctant to replace them before I install a proper
onboard charger, will replace them in the off season along with installing
the charging system.


Are you sure that your charger needs changing. I must admit that I don't
know what "deep cycling" means in the context of a charger. Perhaps
Bobsprit will enlighten me??


Regards


Donal
--







John Cairns
"Donal" wrote in message
...

"John Cairns" wrote in message
...
One of my off-season projects will be the installation
of a proper on-board charging system. As long as I sail out of this
marina,
keeping the batteries charged with the diesel will be a problem.

How old are your batteries?

I fitted new batteries to Setanta this year, and they made a huge
difference. In future, I'll change them every 4 years.


Regards


Donal
--

That is not a nice way to treat house batteries. Use a starting battery
for starting and house bats. for low current draw.

Cheers MC

Donal wrote:

"John Cairns" wrote in message
...

Yeah, the batteries are probably shot, they are dated '99. I have a deep
cycle battery charger and it didn't want to charge one of them before our
summer cruise.


That's what happened to me back in March. One of the batteries would go
flat very quickly after being charged. The other battery wasn't great,
either.
With hindsight, I can see that the deterioration was gradual. Last year, if
we left the fridge running overnight, then the house battery would be almost
flat by the morning. With the new batteries, I can start the engine on
the house battery in the morning.




I was reluctant to replace them before I install a proper
onboard charger, will replace them in the off season along with installing
the charging system.



Are you sure that your charger needs changing. I must admit that I don't
know what "deep cycling" means in the context of a charger. Perhaps
Bobsprit will enlighten me??


Regards


Donal
--








John Cairns
"Donal" wrote in message
...

"John Cairns" wrote in message
...

One of my off-season projects will be the installation
of a proper on-board charging system. As long as I sail out of this

marina,

keeping the batteries charged with the diesel will be a problem.

How old are your batteries?

I fitted new batteries to Setanta this year, and they made a huge
difference. In future, I'll change them every 4 years.


Regards


Donal
--