ironstone74 Posted July 27, 2010 Report Share Posted July 27, 2010 I picked up a used portable fishfinder and I can't top up the battery charge. It still has power but I want to top it up if I can. When I connect the the charger connections to the corresponding coloured mount, I get a red LED saying "SHORT/REVERSE" instead of "CHARGED", or "CHARGING". I tried reversing the connection and the same result. Any ideas??? Do I have to completely drain the battery before I recharge it? Thanks for any help, Paul The battery is a 12volt 7Ah. Link to comment Share on other sites More sharing options...
alexcba Posted July 27, 2010 Report Share Posted July 27, 2010 if its the same as my portable 160 (wall plug with led) i once drained the battery on it completely. the red also means your very low on juice. i know when i plugged mine it, it was red after that, i left it for a few hours and it turned from orange/yellow, to green on the charger. "just set it and forget it" Link to comment Share on other sites More sharing options...
ironstone74 Posted July 28, 2010 Author Report Share Posted July 28, 2010 Cool, thanks I'll give that a try! I emailed Humminbird also to see what they say. Paul Link to comment Share on other sites More sharing options...
livinisfishin Posted July 28, 2010 Report Share Posted July 28, 2010 I have the 160, absolutely love it! Same deal with the battery, just left it and it was fine Link to comment Share on other sites More sharing options...
Fisherman Posted July 28, 2010 Report Share Posted July 28, 2010 I picked up a used portable fishfinder and I can't top up the battery charge. It still has power but I want to top it up if I can. When I connect the the charger connections to the corresponding coloured mount, I get a red LED saying "SHORT/REVERSE" instead of "CHARGED", or "CHARGING". I tried reversing the connection and the same result. Any ideas??? Do I have to completely drain the battery before I recharge it? Thanks for any help, Paul The battery is a 12volt 7Ah. Take your handy voltmeter and see what the actual resting voltage is, maybe the battery is borderline toast, and make sure the battery is correctly connected. Link to comment Share on other sites More sharing options...
ironstone74 Posted July 29, 2010 Author Report Share Posted July 29, 2010 Thanks guys, it's been charging for 6 hours now and is still red I'll see how the charge holds up 2morrow!!! Paul Link to comment Share on other sites More sharing options...
livinisfishin Posted July 29, 2010 Report Share Posted July 29, 2010 Sounds done :s ! Any idea on the cost of a replacement? Link to comment Share on other sites More sharing options...
Fisherman Posted July 29, 2010 Report Share Posted July 29, 2010 Sounds done :s ! Any idea on the cost of a replacement? Ah, about $25-30, your local battery shop will carry them. Link to comment Share on other sites More sharing options...
Roy Posted July 29, 2010 Report Share Posted July 29, 2010 I've told this story a dozen times here but....a long time ago, I had an Eagle Ultra or whatever it was. I had converted it to being portable. I was mostly running it when I was in places where I could not bring my own boat in. The security system in the house used a 12V, 7.5A battery backup plugged into a transformer that would keep it charged. I had 2 batteries and whenever I went north to those lakes, I'd simply swap out the fully charged security battery for the other. It would last me 3-4 days on the water and when it was time to go north again, I'd simply swap them out of the security system again. The batteries were always fully charged. Link to comment Share on other sites More sharing options...
ironstone74 Posted July 29, 2010 Author Report Share Posted July 29, 2010 All good! It took 7.5 hours to get a green. Instructions should be more clear. Let's see if it can lead me to some beauties in the canoe AKA "bassboat" today. Haha. Paul Link to comment Share on other sites More sharing options...
livinisfishin Posted July 29, 2010 Report Share Posted July 29, 2010 Righ on! Link to comment Share on other sites More sharing options...
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