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AMF
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17 Posts
Discussion Starter #1
Does anyone have this is their skiff. Seems prices have come down over the years. About to buy a new one for my Yamaha 40 2 stroke and trying to decide between this an a optima.

http://www.skyrichbattery.com/

Thoughts?
 

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Brandon, FL
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10,524 Posts
My knowledge of them is that they require special chargers.

My battery drills that have the same batteries but one is ni-cad and the other is lithium won't charge if in the wrong charger...no idea if this is the case with these or not or if an inline adaptor is required.

Buy one and let us know.
 

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I Love microskiff.com!
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218 Posts
I don't know about the lithium batteries, but just as a point of comparison, I started a 40 hp yamaha two stroke on my 13 whaler (RIP) for years with just a lawn tractor battery with no problems. You really do not need a battery that will start a v8 truck motor to start a small engine, plus, any weight you save in the back will be a plus. Keep in mind, I did carry a pull start rope, but I never had to use it.
 

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I Love microskiff.com!
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58 Posts
Lots of lithium ion batteries for racing motorcycles are now available. If they will start a 1000cc motorcycle engine, your small outboard is easy. Price is dictated by type of cell used, number of cells and sophistication of battery management system or lack thereof.

Comparisons are also becoming easier as vendors are likely to show CCA and capacity numbers.

Chargers are VERY specific and cheaper batteries without management systems will need a charger to handle that function.

Some of the best and most accurate info can be found here:

http://www.fullspectrumpower.com/blogs/full-spectrum-blog
 

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Soy un Perdedor
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2,591 Posts
Dumb question: if you use it as a starting battery, can an outboards alternator charge a Lithium Ion?
 

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Registered
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3,642 Posts
I've had Shorai lithium batteries in both my street bike and my mower for 4 years and the bike and mower have been charging them fine.
 
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