Depth finder battery

Got a question about a battery. What kind of battery life would you expect a 12 volt 7 amp battery to get only powering a lowrance elite 5 dsi. I currently have a hummingbird 175 and it runs off the same battery as my 30lb trust min Kota and I can't get a whole day of trolling and running the depth finder out of it. Was thinking I could run the depth finder off of the smaller battery and not have to find space to put another one. I have a 1542 John boat for hunting that I fish out of. What y'all thinks? Thanks

If those two pieces of electronics, and by far the troller is the greater load, eat through the capacity of your battery then I would look at a new battery there first IMO. You do put a charger on it as soon as you get home?

Most sonar units will shut down below 10v. Speed coil type trolling motor don't care. It keeps on running even if the prop quits spinning, it keeps on blood sucking the battery if it is turned on. Ohms law.

Paul .... according to the Operations Manual http://www.lowrance.com/Root/Lowranc...0153-001_w.pdf the unit draws 630 micro Amps @ 13.5 Volts (see 1st page titled "Specifications" at the end of the manual)

Cane Pole may be able to translate that into hours of use, before it drops below the 10V barrier. I don't have a clue :dono :banghead

... cp :kewl

Most batteries have a time vs load discharge table (relative to temperature). Look the battery chart up. I would believe 650 milli amps, but not the micro amp rating pappy.

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Originally Posted by Cane Pole

Most batteries have a time vs load discharge table (relative to temperature). Look the battery chart up. I would believe 650 milli amps, but not the micro amp rating pappy.

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:Doh: ... "milli amps" :bash ..... mini/micro/milli .... it's all Greek to me :Rofl

YOU'RE the rocket scientist ... I'm just a retired pill pusher :notworthy (aka Pharmacy Technician)

... cp :kewl

Thanks guys. I bought the cheapest deep cycle battery I could from Walmart trying to do this crappie fishing thing on a budget. Too bad that's going out the door. Ha. I do try and charge my battery as soon as I get home if not within a day or two. It's probably only 4 months old. Ill try and look up those charts.

And, if you want to get some more info on your E5DSI ... check out my sticky thread, at the top of the page. It's a long read, if you read "everything" ... but, you can hit the 'highlights' by looking for pics, charts, & links that are contained in the posts. And don't hesitate to jump in, anytime, with questions or observations of your own.

... cp :kewl

Thanks crappie. I've already been reading it when trying to decide if I wanted to take the jump. I'm sure ill have some questions

Check out the 12v deer feeder batteries available at Academy sports, or Gander Mtn, even Cabelas has 'em with their own charger. I use one in my yak, ran a Mark 5 pro for 4+ trips at 4hr/trip. The DSI may discharge the battery a bit quicker than a regular 2d FF, but should still last all day long imo.

Thanks. I'm going to try that. I already have a cabelas 12v battery for a duck decoy. Worth a shot. Thanks

I got my depth finder set up and fished for 5 or so hours Saturday and my depth finder didn't kill the 12v cabelas battery. Just wanted to give an update for anyone thinking about doing this.

Just saw this thread. First, I think you need a bigger deep cycle trolling battery. Sounds like you've got maybe a 24 group? Try a 27 or better yet 29 group.

Second, I run an Elite 4x DSI off of a 7ah (deer feeder) battery, and it works great. At only 5 lbs., it is a great way to isolate your FF to reduce interference or for placement in the boat. My FF only pulls around 300 milliamps, and after a full day of fishing, it only drops about .3 -.4 amps. So double the draw to 600 ma, and yours would likely drop the voltage by .7 or so, which is fine. You could probably get a couple full days of fishing out of a single charge.

Ohms law. Rite on.

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Originally Posted by PaulL

I got my depth finder set up and fished for 5 or so hours Saturday and my depth finder didn't kill the 12v cabelas battery. Just wanted to give an update for anyone thinking about doing this.

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I use the Cabelas battery in my Jon boat. Too much interference using the trolling motor battery. No starting battery as my 9.9 is pull start.

Quote:

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Originally Posted by PaulL

I got my depth finder set up and fished for 5 or so hours Saturday and my depth finder didn't kill the 12v cabelas battery. Just wanted to give an update for anyone thinking about doing this.

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I use a 12v "decoy" battery on my Elite 5X DSI. Plenty good for a day of fishing, easy to handle, doesn't take a lot of room, no outside interference, etc. The main thing is, if it works for you, go with it.

Edit: I meant to say it drops the battery by .3-.4 volts when I check it at the end of the day.