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Old 17 August 2004, 03:52   #11
Country: UK - England
Town: nr Lymington
Boat name: JU-JU
Make: Halmatic PAC22
Length: 6m +
Engine: 140.5 Mermaid
Join Date: Sep 2003
Posts: 1,400
To save you money, It might be worth thinking about temporarily swapping you rib battery for the car battery (if it fits). It is much easier to bump start a car and car alternators really pump out the power. If after a few miles (maybe 200 ish) the battery is not holding its charge get a new one. Des

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Old 17 August 2004, 03:57   #12
Country: UK - England
Town: Portsmouth
Boat name: Cracking Day
Make: Tohatsu
Length: 6m +
Engine: Optimax 150
Join Date: Aug 2003
Posts: 265
How about a solar panel trickle charger for the boat?

All the time it's sat doing nothing (like mine) it's charging the battery. Tops up for usage of the bilge etc.

It's free and simple.

Tactical Paintball-Hampshire, Surrey and beyond!
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Old 17 August 2004, 04:04   #13
Country: UK - England
Town: London
Make: Larson
Length: 7m +
Engine: Volvo D4 260hp DP
Join Date: Oct 2003
Posts: 275
I thought I would be smart and fitted one of these on my last boat, I got it from Maplins and it went in the ciggie socket, anyway, the ciggie socket would only operate if I left the battery switch on, so I did this, came back a week later and the battery was as flat as a pancake. The reason? Well I had not realised that the interior carbon monoxide sensor came on when the battery switch was put on, this used more power than the solar panel was putting in, so.... dead battery lesson learnt however

So if you go this route ensure that nothing else is running when charging the battery
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Old 17 August 2004, 05:23   #14
Country: UK - England
Town: Norfolk
Make: Redbay
Length: 7m +
Engine: Inboard
Join Date: Jan 2004
Posts: 5,139
I don't think I can rely justify having two batteries on my 4.1m RIB; they're big and heavy, and all I have to power is the engine, nav lights, and VHF.
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Old 17 August 2004, 06:25   #15
Country: UK - Scotland
Make: HumberOceanOffshore
Length: 8m +
Engine: Volvo KAD300/DPX
Join Date: Oct 2002
Posts: 4,851
Originally Posted by timofengland
...I don't think my battery's "shagged" quite yet Meme; it's only been flat a couple of days, ....
It will be if you don't get some charge into it soon.
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Old 17 August 2004, 10:07   #16
Country: Ireland
Town: Loch Lurgain
Boat name: an t-easnach
Make: Gemini
Length: 5m +
Engine: Honda 50
Join Date: Oct 2000
Posts: 138
i had a flat battery when i left the gps on. i just ran jump leads from the car on the slip to boat in water beside the slip and she started no problem. Take for a good blast to recharge battery and right as rain.
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Old 17 August 2004, 10:46   #17
Pete7's Avatar
Country: UK - England
Town: Gosport
Boat name: April Lass
Make: Moody 31
Length: 9m +
Join Date: Aug 2001
Posts: 4,837
Tim, surely you should be asking yourself why is the battery flat ?

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Old 17 August 2004, 11:44   #18
Country: UK - England
Town: Southampton
Boat name: Searider / War Shot
Make: Avon / Scorpion
Length: 4m +
Engine: 30hp Yam / 150hp opt
Join Date: Sep 2003
Posts: 1,846
Why not pull start it?

Why not just pull start it and let it charge the battery itself?

BTW - I have jump started my engine after the battery has been left for several months and I had to start the engine in freezing weather. Just pinched a battery from one of the cars and connected this to the boat battery and it started easily.

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Old 17 August 2004, 11:54   #19
Country: UK - England
Town: Farnborough
Boat name: Eleven
Make: Arrow
Length: 8m +
Engine: 557cu, 700hp
Join Date: Jul 2003
Posts: 1,255
Yeah, outboards will happily start off a PP9.
But they tend to have very small charging circuits so you need to run for an extended period before the battery is fully charged again.

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