Battery question?

I have two batteries in my boat--one is a marine battery used for starting the motor and the other is a normal battery same as I use in my Landcruiser which I use to run instruments-lights,sounder ,radio GPS etc.The marine battery is 7 years old and the other is 9 years old.How come similar batteries in my Landcruiser only last 2-4 years?
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Reply By: Member - Toyocrusa (NSW) - Wednesday, Feb 13, 2013 at 07:14

Wednesday, Feb 13, 2013 at 07:14
Had a battery last 13 years in an old 89 Tarago. Think it's just the luck of it. I'm sure later made lead acid batteries are able to be made with a limited life though. Bob.
AnswerID: 504650

Reply By: Olsen's 4WD Tours and Training - Wednesday, Feb 13, 2013 at 08:32

Wednesday, Feb 13, 2013 at 08:32
Under-bonnet heat is a battery killer
AnswerID: 504654

Follow Up By: Mazdave - Wednesday, Feb 13, 2013 at 09:42

Wednesday, Feb 13, 2013 at 09:42
can support this theory.
Recently replaced the original battery in my 2005 BMW X5. Lasted 7-8 years. The key, it is mounted in the boot space below the spare tyre.
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Reply By: Geoff in SA - Wednesday, Feb 13, 2013 at 09:00

Wednesday, Feb 13, 2013 at 09:00
Hi Rambler

maybe it one of those why questions.....

Why is thew sky blue
why do red cars go faster
etc etc
AnswerID: 504658

Follow Up By: Member - bbuzz (NSW) - Wednesday, Feb 13, 2013 at 09:10

Wednesday, Feb 13, 2013 at 09:10
My boat batteries are going on 6 years.
I keep a trickle charge going in via a small solar panel to both, so I put my long life down to that.

bill
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Reply By: get outmore - Wednesday, Feb 13, 2013 at 15:14

Wednesday, Feb 13, 2013 at 15:14
Im assuming your cruiser is diesel?
It takes a heck of alot more grunt to start a high compression diesel donk for starters which lessens thier life. But also it takes a battery in good shape to start one.
So you could use a battery in a petrol vehicle for much longer before it no longer has the grunt to start it
AnswerID: 504676

Follow Up By: gbc - Thursday, Feb 14, 2013 at 09:03

Thursday, Feb 14, 2013 at 09:03
I don't know about the cruiser, but my merc optimax needs 1000 cca to turn it over. I struggle to get more than about 4-5 years from both vehicle and boat batteries no matter what the brand is.
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