shorai lithium batteries

would these work?....... scroll down to videos.

Even the recommended size batteries barely get the job done, especially if you have mods in the engine/high compression.

Good luck.

TeK9iNe wrote: Even the recommended size batteries barely get the job done, especially if you have mods in the engine/high compression.

Good luck.

That ain't no shit my brand new yuasa struggles. I think I need a high torque starter and an optima. :woohoo:

It will help if the battery cables from the terminals are changed to a larger size. 6 gauge welding cable with the correct crimped on terminals increases the current going to the starter motor.

Also the cable going from the Positive(+) terminal to the starter solenoid and from there to the starter motor, don't forget the Negative(-) battery trminal to the engine mounting bolt too.

I think the ballpark is at least 15 Amp-hour. More is better.

something like this work?

shop.ebay.com/i.html?_nkw=a123+battery+m...p3286.c0.m270.l1313#

tiny motorcycle battery
I don't think you'll get away with something like that Joe, at least not for long. You could give one of these a shot though!

porchev914 wrote: tiny motorcycle battery
I don't think you'll get away with something like that Joe, at least not for long. You could give one of these a shot though!

those are nice adam. doing some reading on them now. whats the cca i should have for the 1000? 200 or more? and can they be laid on thier side?

The small lithium cells can start a bike, sure, but sucking that much amperage out of that tiny capacitance that quickly = dead/weak cells, VERY quickly. I used to run RC cars off those cell packs we built and they only lasted about 15 minutes.

If you like building and replacing battery packs frequently - go for it.

The reason that the batteries are large is not just for the amperage capacity, but also to act as a buffer/capacitor for the charging system, to help smooth out the power.

There is probly some fancy light/small race approved batteries I might use, but for a street bike...? I dont know.

Peace.