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Humminbird cuts off #15348050 03/06/25 02:56 AM
Joined: Nov 2017
Posts: 147
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Fish2Chill 1 Offline OP
Outdoorsman
OP Offline
Outdoorsman
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Joined: Nov 2017
Posts: 147
Curious if my Humminbird 998C issues could be battery related? It is connected to a blue top AGM battery that reads good on voltage and has no problems starting the 150 fourstroke. Depth finder shuts down frequently and only message says something to the effect of voltage too high. Battery voltage as tested with a good meter is about 12.5 volts.
Depth finder is about 12 years old so probably in need of replacement, but want to deal with that later. Age of the blue top is at least 5 years and could be substantially older.

Re: Humminbird cuts off [Re: Fish2Chill 1] #15348261 03/06/25 01:13 PM
Joined: Mar 2010
Posts: 29,244
T Bird Offline
TFF Guru
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Joined: Mar 2010
Posts: 29,244
You sure message doesn't say "low voltage"?


Okie by birth, Texan by choice.
[Linked Image]
USAF "Thunderbirds" Alumni 1985-1989




Re: Humminbird cuts off [Re: Fish2Chill 1] #15348296 03/06/25 01:41 PM
Joined: Mar 2003
Posts: 11,618
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Fishin' Nut Offline
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Joined: Mar 2003
Posts: 11,618
I have always run my Helix units from a separate battery. My Helix 8 would stay on, but my Helix 9 would shut off every time I started my motor. A 50ah wheelchair battery is what I now use.

Re: Humminbird cuts off [Re: Fish2Chill 1] #15348534 03/06/25 05:03 PM
Joined: Jan 2012
Posts: 1,568
6BOOMER Offline
Extreme Angler
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Joined: Jan 2012
Posts: 1,568
The battery may test good but how about under a load? 12.5 v is not too high..

Re: Humminbird cuts off [Re: Fishin' Nut] #15348623 03/06/25 07:12 PM
Joined: Mar 2007
Posts: 16,562
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forkduc Offline
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Joined: Mar 2007
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No issues since I upgraded to a Sea Clear harness!

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