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Old 11 June 2004, 18:28   #21
Country: UK - England
Town: Exeter
Boat name: gazza's girl
Make: rib-X
Length: 5.75
Engine: Suzuki 90 4 stroke
Join Date: May 2004
Posts: 80
Battery capacity discharge test

Its no good trying to test the capability or current state of your battery with a volt meters.. Volts are only a measure of potential difference and not power.

I would suggest in the first instance you take your battery to a recognised battery supplier and ask him to test it properly under load,,,

You must ensure your battery is fully charged before he can test it....

You might also try swapping the battery out on your Shogun as you know that works.. But be careful because if it is a newer model vehicle your might lose both radio codes and alarm setting by removing the battery.

Finally any battery that is say over 55 amp / hour should be enough to turn your engine over......

Can you turn the motor by hand ?????


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Old 12 June 2004, 03:22   #22
Country: UK - Wales
Town: Southampton
Boat name: DynaMoHumm/ SRV/deja
Make: Avon8.4, 5.4 & 4.777
Length: 8m +
Engine: Cat3126 Yam 90 &70
MMSI: 42
Join Date: Dec 2003
Posts: 6,533
When i was in employment I used to buy Ultima Batteries (real expensive) but since leaving the corporate structure I find the leisure batteries from Towsur do Kwite well. (110 amp for 39 kwid)

Here it comes again, I don't stand a chance
Soul possession, Got me in a trance
Pullin' me back to you - Deja Voodoo
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Old 12 June 2004, 05:58   #23
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Country: UK - England
Town: Berkshire and Devon
Make: Lodestar
Length: under 3m
Engine: Mercury 5hp
Join Date: Jul 2002
Posts: 5,015
Towsure orange battery 39 kwid

Ours has done nearly a full year now. Didn't need charging over winter.

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