Lithium ion batteries

Talked to a vendor a three Progressive Motorcycle show yesterday. I need one of these batteries. Has/does anyone here run a lithium battery. I use a cordless drill all day everyday for my job. The lithium batteries have made a huge difference in power, weight, charge time etc. Here is a link to the company that I talked to:

www.miraipower.com/selector.asp?type=mot...=1000&startyear=1977

If any one has tried a lithium battery please share your experience. Saving 8 lbs on average and being able to mount in any orientation is very cool.

Just bought this Shorai for my Café project.
Haven't tried it yet but it is tiny and weighs nothing.

www.amazon.com/SHORAI-LITHIUM-BATTERY-LF...2-BS12/dp/B007AXQ7HK

zed1015 wrote: Just bought this Shorai for my Café project.
Haven't tried it yet but it is tiny and weighs nothing.

What size motor are you using this on?

He is using it in this www.kzrider.com/forum/11-projects/395445...percharged-who-knows

More places to look:
Dry Cell Motorcycle Batteries
en.wikipedia.org/wiki/Lithium_iron_phosphate_battery (Information)
www.batterystuff.com/batteries/motorcycle/kawasaki/
www.pegasusautoracing.com/group.asp?GroupID=BALLISTICEVO2
www.ballisticparts.com/products/batteries/12cell.html
www.spencercycle.com/category-s/232.htm
www.shoraipower.com/t-faq.aspx (information)
www.shoraipower.com
www.batterystuff.com/all-products-by-brand/shorai/#10028
www.odysseybattery.com/

Been running one in my 750 twin for at least two years now. Never put it on any kind of trickle charger and it always fires right up after sitting all winter.

They are Lithium Iron, LiFePo, not Lithium Ion.

kaw-a-holic wrote: Talked to a vendor a three Progressive Motorcycle show yesterday. I need one of these batteries. Has/does anyone here run a lithium battery. I use a cordless drill all day everyday for my job. The lithium batteries have made a huge difference in power, weight, charge time etc. Here is a link to the company that I talked to:

www.miraipower.com/selector.asp?type=mot...=1000&startyear=1977

If any one has tried a lithium battery please share your experience. Saving 8 lbs on average and being able to mount in any orientation is very cool.

I believe the MC batteries are Lithium Iron Phosphate (Li Fe PO4).

I have read many posts from happy customers and many where they failed very quickly. I am not sure the very wide voltage tolerance of a motorcycle charging system is compatible with Li batteries. At Nat Semi, we designed some of the original charge control IC's for Sony's Li-Ion batteries. They demanded +/-0.5% accuracy on the charge voltage. The accuracy of the MC system voltage is more like 3%. Sony showed us data indictaing that a variance of 0.5% on charge final voltage corresponded to a 30% change in battery charge (HUGE) hence their demand for accuracy. The Li battery makers are claiming that the charge voltage doesn't need to be accurate, and I am skeptical of the truth of this claim. I suspect they need to sell batteries and would not sell them if they told everybody they needed a much more accurate voltage regulator with the lI battery. I suspect the guys that have no problems versus the guys whose new Li batteries keep failing are likely due to system charge voltage (?)

YMMV

Been through 3 of the lithium batteries now due to the variance in charging. When I was asking, it was all good, after I bought it and killed the first I was told it didn't like the variance of charge. Problem is, when I ask them, they all claim they have a diode or some sort built in deal to smooth it out or level the charge or what ever you want to call it. Truth is, I think sales.
1st one lasted all year, went through 2 this year alone.

Les

There is a reference document on Li Ion charging here:

batteryuniversity.com/learn/article/char...ithium_ion_batteries


Their note says (for one Li cell):

Most cells charge to 4.20V/cell with a tolerance of +/–50mV/cell.

That would correspond to a "12V" battery which had three cells for a charge voltage of:

12.6V +/- 0.150V.

Based on that, the 14V system voltage of most cars and bikes is too high?

Shorai claims that their battery is 100% charged at 14.34V, but I can't figure out how that's possible.
shoraipower.com/faq

I was told to use them only with a newer combined regulator/rectifier. That was on my Honda CB 750K though.
Worked amazingly well, never had any problems.
antigravitybatteries.com/