Plum
Well-Known Member
Which model/power/ thrust trolling motor do you have? How well is it lasting. Thanks.
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Last edited:
Lithium battery for trolling motor
- Thread starter Kelpie
- Start date
www.solocoastalsailing.co.uk
Plum
Well-Known Member
My plan is to go for two small mobility scooter batteries, something like MOBILiTY SCOOTER BATTERIES 2 x 12v 33ah MOBILITY BATTERIES AS 30ah 32ah 34ah 35a | eBay , so each one is not too heavy. If I find I have limited range i will buy a third battery. I plan to use an Anderson connector to enable quick battery changeover like this PAIR 50 AMP ANDERSON CONNECTOR 6mm CABLE TERMINALS JUMP START BATTERY POWER PLUG | eBay
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Kelpie
Well-Known Member
Wouldn't dream of an electric outboard on a cruising boat, hard enough as it is to get the batteries charged every day
How do you get to the reef for a snorkel miles away and back?
Oh, remembered, jump in with the yanks anchored next to you and their rib with a 20 horse on the back
My trolling motor plus an old car battery will have cost me the princely sum of £110. And if I sell one of my 2.5hp 2 strokes, I will be quids in.
I will then buy the 9.8hp Tohatsu 2T that I always planned on getting, and use it for the longer/faster trips.
I'm taking the same approach with the galley. 1600w induction hob to use when I have the power, but I'm not ripping out the gas system.
Kelpie
Well-Known Member
Finally got round to playing around with the trolling motor today.
Quite a nifty wee thing. Not super powerful, but much much closer to replacing an outboard than a set of oars. In fact I doubt my 2 stroke is any faster. And soooo quiet too.
It did take a fair dent out of my car battery though, just with a few minutes of messing around, so I think a lithium replacement is required.
I'm gradually learning more and more about these batteries. It seems that we've come to the point where the cells are actually quite cheap (cheaper per useable Ah than a good lead acid anyway), but all the gubbins that go with it can more than double the cost.
For a trolling motor, I think I can dispense with some of the clever stuff though. The battery will only ever be discharged whilst someone is there to keep an eye on it. So I'm thinking I could just add an individual voltmeter to each cell, and hey presto I am the BMS. It's not exactly elegant but it gives me full cell-level information and infinitely and instantaneously adjustable low voltage disconnect.
Quite a nifty wee thing. Not super powerful, but much much closer to replacing an outboard than a set of oars. In fact I doubt my 2 stroke is any faster. And soooo quiet too.
It did take a fair dent out of my car battery though, just with a few minutes of messing around, so I think a lithium replacement is required.
I'm gradually learning more and more about these batteries. It seems that we've come to the point where the cells are actually quite cheap (cheaper per useable Ah than a good lead acid anyway), but all the gubbins that go with it can more than double the cost.
For a trolling motor, I think I can dispense with some of the clever stuff though. The battery will only ever be discharged whilst someone is there to keep an eye on it. So I'm thinking I could just add an individual voltmeter to each cell, and hey presto I am the BMS. It's not exactly elegant but it gives me full cell-level information and infinitely and instantaneously adjustable low voltage disconnect.
Plum
Well-Known Member
I just found this, although currently out of stock: HASWING Ultima 3HP Electric Outboard, with Integrated Lithium Battery
www.solocoastalsailing.co.uk
fredrussell
Well-Known Member
I just found this, although currently out of stock: HASWING Ultima 3HP Electric Outboard...[/QUOTE]
£1240. At that money you might as well shell out the extra and get a Torqueedo. Be interesting to see what they cost if purchased from China though
£1240. At that money you might as well shell out the extra and get a Torqueedo. Be interesting to see what they cost if purchased from China though
dgadee
Well-Known Member
£1240. At that money you might as well shell out the extra and get a Torqueedo. Be interesting to see what they cost if purchased from China though
[/QUOTE]
£1000 at HASWING Ultima 3HP Electric Outboard, with Integrated Lithium Battery
Prices are gradually getting to the level I would consider.
