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Which lithium battery ?
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<blockquote data-quote="TNReb" data-source="post: 5666611" data-attributes="member: 676"><p>A couple of thoughts...</p><p></p><p>Running your Helix on the same battery.... like you said - your Helix is at the console. You won't be using it when you're running the trolling motor. You won't have to worry about interference. The only thing to consider is how the Helix affects the battery life. If it's a Helix 7 (I can't remember) then it will draw about 0.8amps. If you're running a transducer with it, let's round up and call it 1 amp. If you fish for 8 hours with a 50ah battery, you'd have 42ah left for the trolling motor (in a perfect world).</p><p></p><p>To know the correct battery capacity, you simply need to know how many amps your trolling motor will draw in a given hour. Unfortunately that's not simple. Are you spot locking and letting the motor turn on occasionally to bump you into place? Are you using the trolling motor as your only motor and using it on high for 10 minutes at a time?</p><p></p><p>The max amp draw on the Terrova is 50amp, but I have a feeling that draw isn't typically hit even if you're running it on high.</p><p></p><p>I will say this - on my previous boat I had 3 12v 50ah Ionics in series for a 36v trolling motor (wiring in series doesn't change the capacity - it's still 50ah). I had an Ultrex, then a Ghost. The Ultrex max amp hours is 52. I fished 10-12 hour days before without any problems. </p><p></p><p>Unless you're just constantly on the trolling motor, I think you'd be happy with the 50ah.</p></blockquote><p></p>
[QUOTE="TNReb, post: 5666611, member: 676"] A couple of thoughts... Running your Helix on the same battery.... like you said - your Helix is at the console. You won't be using it when you're running the trolling motor. You won't have to worry about interference. The only thing to consider is how the Helix affects the battery life. If it's a Helix 7 (I can't remember) then it will draw about 0.8amps. If you're running a transducer with it, let's round up and call it 1 amp. If you fish for 8 hours with a 50ah battery, you'd have 42ah left for the trolling motor (in a perfect world). To know the correct battery capacity, you simply need to know how many amps your trolling motor will draw in a given hour. Unfortunately that's not simple. Are you spot locking and letting the motor turn on occasionally to bump you into place? Are you using the trolling motor as your only motor and using it on high for 10 minutes at a time? The max amp draw on the Terrova is 50amp, but I have a feeling that draw isn't typically hit even if you're running it on high. I will say this - on my previous boat I had 3 12v 50ah Ionics in series for a 36v trolling motor (wiring in series doesn't change the capacity - it's still 50ah). I had an Ultrex, then a Ghost. The Ultrex max amp hours is 52. I fished 10-12 hour days before without any problems. Unless you're just constantly on the trolling motor, I think you'd be happy with the 50ah. [/QUOTE]
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Which lithium battery ?
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