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Discussion Starter · #1 ·
G'day all. I apologise in advance if this is a numb nut question, but I know nothing about anything electronic! :shock:
Due mainly to weight issues, I decided to go down the track of using 8 x AA batteries for my newly installed sounder. I bought some standard AA batteries and tested it in the garage last night and it seems to work ok. In trying to find an economical way to keep up with AA batteries I started looking for rechargeable options, and found that the recharge batteries are 1.2v compared to 1.5v for standard AA batteries. 8 x 1.5v = 12 volt power. 8 x 1.2 = 9.6 volt power. So my question is whether the recharge batteries (producing 9.6v for a 12v product) are really suitable for this type of application? I have read some reports that suggest the fish finders can work at much less than 12v, and other reports that suggest 1.2v battery actually produces up to 1.4v! Is this something that will wreck my fish finder?
I am confused :?:
 

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I know that my FF will run off 10.5 to 16v. I didn't realise the rechargeable ones were only 1.2V as this is what I was going to do originally but went the way of 7ah battery.
 

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It probably will run at 9.6V. If it doesn't then 10 x 1.2V will give you 12V, so you'll just need two more of them.
 

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Fisher look at this link from an earlier AKFF DIY, all on AA batteries for sounder will answer all your concerns

http://tinyurl.com/jcvod
 

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Discussion Starter · #6 ·
Great - thanks for your replies. I did a manual search of the site looking for clues on how to go about this - I don't know how I missed that discussion - thanks Dodge.
 

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I bought a 12v 2.9Ah sealed lead acid battery from ebay (YHI Power). Cost me $35 express posted to Melbourne.

http://www.yhipower.com.au/product_vision_cp.htm#

It's a Vision CP1229 and weighs 1.1Kg.

I ran it for 4 hours on the last outing and it was still reading at it's full voltage. I reckon is would do 24 hours fishing before needing a recharge.

Here's some pics of the battery:
http://www.akff.net/forum/viewtopic.php?t=2964

I wanted SLA as I didn't want to fart ass around with recharging AA's. I just put the SLA battery back on the charger when I return and it's charged within a couple of hours, ready for the next trip.
 

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I don't know how well it would run, but I did use a standard 9V battery to power up my Lowrance, no problems.

Don't you just love batteries. :D
 
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