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Posts: 770
| Hey everyone, I am looking at picking up a new trolling motor. Right now I have a 80# Terrova and 4 batteries in the boat, one cranking, one for electronics, and two trolling. I'm running a 1750 fishhawk. As I'm shopping around for a new trolling motor I'm noticing that I can get.into a used 80# and 101# for about the same price, so I'm considering wiring my electronics to my cranking battery and adding going to 36v. Make sense, only downside is I do not have a 3 bank onboard charger Soni would have to hook the 3rd up to a charger or upgrade my onboard charger.
A few questions:
Do all of my batteries need to be the same? My electronics battery is newer than. The others and may not be the same size, if I go to 36v does that matter?
And one have a 36v unit.on a 17.5' boat?
Anything else I ned to consider?
Thanks for your time,
Tanner |
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Posts: 786
Location: Delavan, WI | I'm no expert by I Really think that for your size boat a 36volt system is overkill, 80lbs thrust should be more than enough, running electronics on a starting battery all day can leave you stranded at dark, I know because it happened to me, I upped the battery size to the biggest cca available in my price range, and seems to have resolved it for now, but plan on doing some rewiring in the future |
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Posts: 9
| My dad has a boat a little bigger than yours and runs an 80lb all day with no issue. I am curious why you need the extra battery for your electronics? I think you could probably go to 3 batteries and an 80lb motor. It would be less maintenance and less things to go wrong. |
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Posts: 2318
Location: Chisholm, MN | Overkill. The 80 terrova is great and can last you a few days without a charge if you have good batteries. No reason for the 36 volt. |
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Posts: 20211
Location: oswego, il | I have a 1750 and if your boat is the same as mine, the battery compartment for up front is under the center rod box. There is only room for 2 batteries there so it may be a moot point. I have an 80lb terrova on mine and it allows for good boat control in big wind. The only reason I could see needing a 36 volt system is if you needed the trolling motor for travel.
Edited by ToddM 7/23/2019 7:16 AM
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Posts: 630
Location: Duluth | 80 is fine, I have an 18ft SeaArk with 36v Terrova and I could tube behind the thing. Save the money |
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Posts: 770
| ThanKS all for.the feedback, I have room under.my rod locker for 3 batteries, I have 3 in there now... Im leaning toward a 112 just because I found one used with I-pilot link for an extremely good price, cheaper than I can buy an 80# used, so I think that's the route.im going to go. I am concerned about running.my electronics through my cranking battery, but I'll just have to keep an eye on them. |
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Posts: 630
Location: Duluth | should be fine, I have electronics running off cranking battery now, no issues. I also have my graph's rigged up with with quick disconnects so they can be powered by a smaller 12v, like you would use to power your vexilar for longer days. |
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Location: 31 | T3clay - 7/23/2019 4:55 PM ThanKS all for.the feedback, I have room under.my rod locker for 3 batteries, I have 3 in there now... Im leaning toward a 112 just because I found one used with I-pilot link for an extremely good price, cheaper than I can buy an 80# used, so I think that's the route.im going to go. I am concerned about running.my electronics through my cranking battery, but I'll just have to keep an eye on them. This will help...
Stealth 1 Charging ChargTech Industries |
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Posts: 221
| I don't think the Stealth will help if ones concern is keeping the starting battery charged. It will help with the trolling motor batteries.
Edited by Abu7000 7/26/2019 3:25 PM
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Posts: 546
Location: MN | Your trolling motor batteries should be the same size and relative same age. If not, the weakest battery will be your bottleneck and die first, limiting the use of the other batteries supplying power. Also, you will kill the weakest battery overtime by drawing it to complete discharge while the other still have juice. |
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