Starter Batteries

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Greg Johnson

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Apr 27, 2006
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Been out of the sport for awhile and my 12v gel sealed batteries finally died. What is everyone using for their electric starters now?
 

RaceMechaniX

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A 4 cell lipo is equivalent to 12V gel cell. A 6 cell lipo is equivalent to a 24V system. You can also run 5 cells too for something in between.
3300-5000mAh is usually enough for a full weekend of nitro boat starting. You don't need a high discharge battery. A decent 25C to 45C battery is all that's needed. If you are not comfortable with the higher risks of Lipo batteries there are several LiFe batteries available that would be sufficient.
 

Wasted wages

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Jan 2, 2006
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Battery stuff sure has changed since I last ran boats!! So what kind of charger does it take to charge a 6 cell 5000 mAh pack ?

Overall I think it would still be cheaper to use two 12 volt gel cells ?
Is cost justification there ?
 

john v

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Oct 10, 2007
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a finer edge mfg makes a kit that you can use a makita cordless drill battery to power your starter, i have 2 and they work well for not that much money if you already have the batterys
 

Greg Johnson

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Apr 27, 2006
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Thanks for the input! Things have changed in battery technology. Just trying to catch up and keep up.
 

RaceMechaniX

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Lipo's are nice if you want a cordless starter like Boris Mazor produced where weight is a factor. If you are still using a starter box and the batteries are mounted in the box you have a little more freedom to choose the batteries. Power tool batteries are nice if you are already have the charger and batteries. Take a look online as people are 3D printing battery adapters to connect a Dewalt/Milwaukee/Bauer battery to 4mm banana jacks.

3D printed battery adapters for power tools
 

Greg Johnson

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Apr 27, 2006
Messages
109
Lipo's are nice if you want a cordless starter like Boris Mazor produced where weight is a factor. If you are still using a starter box and the batteries are mounted in the box you have a little more freedom to choose the batteries. Power tool batteries are nice if you are already have the charger and batteries. Take a look online as people are 3D printing battery adapters to connect a Dewalt/Milwaukee/Bauer battery to 4mm banana jacks.

3D printed battery adapters for power tools
Just saw one on line and am placing an order for it now. Thanks!
 

Mike Cathey

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Jan 5, 2006
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Had to replace my gel cells a couple of months ago. I suppose they were perhaps 8 years old or so. $34 for a pair of 7ampers from Amazon. I also got one of the Gizmo starters and a 5000ma 3C battery that works really well. I like the double pulley so I can use it on nitro and a slower speed for gas. Sometimes my grandson races with me so it's nice to have two starters.
 

Hydro Junkie

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Oct 2, 2006
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Has anyone seen an adapter for the Ryobi 18 volt universal, Craftsman 20 volt or Cobalt 24 volt pack? I have all three types of battery packs available and am to the point I don't really want to have to carry 12 volt batteries that I have no other use for. Thanks all
 

Mark Anderson

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Nov 22, 2002
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I took an old dead tool and cut the battery holder off. Mounted it to the starter and use my Milwaukee batteries. Should be able to do the same with any brand.
 

Hydro Junkie

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I could, if I had a tool that was dead. All three of the battery types I have are all new within the past couple of years
 

rhomodel

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Jul 15, 2003
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I prefer 4 or 5 cell LiFePo4: they are not as burn dangerous as the LiPo cells, that you have to treat very carfull when charging.
 

Mike Hughes

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Feb 23, 2003
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I could, if I had a tool that was dead. All three of the battery types I have are all new within the past couple of years
Then buy the cheapest tool you can and gut it for the adapter. I was gonna do this with a usb adapter for the dewalt. It cost me like 25 at the time. The project got stalled and then when I was going to start it up again, they were selling them.
Mike
 

Hydro Junkie

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Oct 2, 2006
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I got lucky. I found this site by accident and they had just what I was looking for:
Now, the only question is can the smaller Sullivan 601 handle 18 to 20 volts? I know it's only made to take 12 while the Dynatron can handle up to 24
 
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Wasted wages

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Jan 2, 2006
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just make sure the rotor/armature wire is wound tightly and epoxied or tied in the slots.

I had one spit the guts out on 24 volts.
 

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