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Author Topic: What Battery  (Read 2770 times)

DickyD

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What Battery
« on: January 28, 2008, 08:19:33 PM »

Can someone who has altered the Seaport Workboat tell me what battery you have used i.e. lead acid, what size ?  :-\
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offshore1987

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Re: What Battery
« Reply #1 on: January 28, 2008, 09:49:49 PM »

I have not got one but from what i have seen they use 6v 4ah batterys  O0

all the best
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portside II

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Re: What Battery
« Reply #2 on: January 28, 2008, 10:28:20 PM »

same here Richard , 6v 4ah sla battery ,removable sit's on the tank in the bilge and can be removed  with ease.
daz
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DickyD

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Re: What Battery
« Reply #3 on: January 29, 2008, 09:20:16 AM »

Thanks chaps.  O0

Any idea of the run time ?  :-\
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DickyD

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Re: What Battery, Run time & Charging
« Reply #4 on: January 29, 2008, 10:25:37 AM »

Am I right in thinking that a 4Ah battery charging at 500ma will take 8 hours to charge ?  :-\

Brain wont work. :embarrassed:
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Colin Bishop

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Re: What Battery
« Reply #5 on: January 29, 2008, 10:49:08 AM »

In theory yes but if it's a Gel cell then it shouldn't be more than half discharged anyway so recharging time should be less.
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tolnedra

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Re: What Battery
« Reply #6 on: January 29, 2008, 11:03:10 AM »

Same here Richard, 6volt SLA, 4ah, seems to run forever, so far!

Danny
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DickyD

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Re: What Battery
« Reply #7 on: January 29, 2008, 11:22:22 AM »

Thanks chaps thats what I wanted to know.  O0
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Faraday's Cage

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Re: What Battery
« Reply #8 on: January 29, 2008, 01:13:19 PM »

Quote
Am I right in thinking that a 4Ah battery charging at 500ma will take 8 hours to charge ?]

DD,

A gel cell charges at contant voltage but the charging current drops as the voltage comes up to the point where once the gel cell is charged - the current is only a few milliamps. 20mA would be a typical figure. Therefore the usual current verses time calculation used for ni-cds etc. doesnt apply here.  Its safe to the leave the correct charger on charge for the aforementioned reason. (Thats how a security alarm charger works).  Also, its not a good idea to run a gel cell until "flat" as it will difficult to recover the battery from this state especially if left until next time its required.

FC
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DickyD

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Re: What Battery
« Reply #9 on: January 29, 2008, 02:51:52 PM »

The battery is a SLA 6v 4Ah  FC. O0
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