I wanna know where too. I'll PM lutach.... These cells would be the shit for that price. These are the same nominal volatage as a123, right? 3.2v? Would you use an a123 charger? What's a good, cheap charger? These need a balancer?

That was quick

I think this is their website - http://www.headway-xny.com/en/index.php

You can expect about 30watt hours per mile as a baseline. The efficiency of your system will have a lot to do with the final numbers, along with your weight, top speed, terrain, riding style, tire pressure, etc.

Efficient ebikes get 10wh/mile. Mostly pedaling and slow accelerating. I get right at 30 going balls out with lots of wheelies and hills.

The price was actually in one of the forums where a guy used a few of them in his EV conversion. He did go direct to Headway. I'll be soon getting a special project going and once that's up and running, I'll start dedicating some time for my own electric vehicle. I sent a few new ideas to some of the engineers I know in Brasil and they were speechless. I told them my plan was to go from NJ to CA and back to NJ in one charge and they said it'll be possible with the idea I have. The only problem is that the estimated price has almost doubled, but the items I'll be using are top notch and when I tone it down to a consumer level, the prices will be much lower.

heh. Never been familiar to watt hours before. :oops: Can you tell me how to translate that into miles on a charge? :neutral:

www.headway-cn.com

Be careful with imitators and fake websites, there are plenty in China.

[speechless] ... :surprised: ... [/speechless] ... wow :gasp:

And thanks for the link. I guess the unregulated manufacturing in china has is consequences... However I love it! Cheap stuff, can't argue with that.

watt hours- nominal voltage x amp hours.

So a 36v pack that has been drained of 1 amp hour provided 36 watt hours. A little more than a mile for me.

Be professional when you ask Headway for your cells. Show too much excitement and not enough knowledge and they might not be able to help you.

Yes, I am actually in the process of getting a deal worked out with Headway... being very pro about it... like I am with every EV parts company I contact. :wink:

Tell them you are making a prototype ebike with highest power out there.... :yes:

Cheers

Ahh, I see. So I should expect a mile+ per amp hour running 36v? 10ah might be the way to go then.:angel:

And Lutach, The only way to get the cells from the company is by asking them? Would you have a clue how much they charge for cells/shipping? I'm glad you suggested I be formal...:lol:

Yeah, I would have guessed around 30Wh/mile as well, and you say you actually do get around that number John, that's good.

Yes, I would expect a solid 10 mile range with a 360Wh pack.

I happen to just get a reply back for $/cell quote, it's $16/cell 38120S 10Ah... these have a screw terminals, which is very nice.

What's the specs on those? Are they the 10C cells?

Yup, 10C/15C, but I have seen a couple different rating for seeminly the same cell, but I guess teh China - English translation is all mungljumbled...

Metallover, how come you don't know about these cells, I see you at Endless Sphere forums. They seem to be quite fond of them over there.