Lithium motorcycle batteries?

Geonerd · Aug 7, 2011

Shorai and several other manufactures are selling lithium batteries as drop-in replacements for the lead-acid bricks we've all come to love. The prices are reasonable, and you'll shave around 10 pounds from your ride. Does anyone have first-hand experience with these things?

This is what I'm looking at: (It's 17 POUNDS lighter than the stock unit.)

http://www.shoraipow...625-ZX750E.aspx

cliche guevara · Aug 8, 2011

i'm not a 100% sure but i think my dad has a lithium battery in his yamaha and i can't recall any proiblems

chopperman · Aug 8, 2011

I thought they couldn't use lithium in automotive aplications because of the discharge rate. Lead acid holds a constant voltage then drops right off where as lithium starts to discharge straight away in a linier fashion. Because vehicles are 12 volt once the battery drops to 11.9 volt nothing will work hence lead acid was always favored.

12 v lead acid battery are actually 13.2 volt before someone corrects me. 6 cell @ 2.2 volt per cell. This gives a bit of a buffer before power drops to below 12 volt causing electrical failier.

Pander · Dec 1, 2011

chopperman said:
I thought they couldn't use lithium in automotive aplications because of the discharge rate. Lead acid holds a constant voltage then drops right off where as lithium starts to discharge straight away in a linier fashion. Because vehicles are 12 volt once the battery drops to 11.9 volt nothing will work hence lead acid was always favored.

12 v lead acid battery are actually 13.2 volt before someone corrects me. 6 cell @ 2.2 volt per cell. This gives a bit of a buffer before power drops to below 12 volt causing electrical failier.

I think 2.2V is quoted as being maximum voltage per cell. Its the alternator that has to chuck out 13-14V in order to actually charge the battery. And I have heard the lithium batterys do drop off quite quickly.

devo · Dec 1, 2011

A few of us used them in race bikes. A much simpler alternative to smaller lead acid batteries and having to plug them in to crank.

Worked fine for that application. Not sure about day to day use. The google machine should have some feedback, they have been around a while.

bluegreen · Dec 19, 2011

I have one, zero complaints and my bike is old

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Lithium motorcycle batteries?

Geonerd

cliche guevara

chopperman

Pander

devo

bluegreen

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