Whatever happened to the Efun-D ?

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davem
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Whatever happened to the Efun-D ?

I am new to the board and while looking at the Z-20, XM-2000, etc, I found mention of the Efun-D. But somewhere around November of 07 it fell off the board all together.

Was it /Is it real?

DanCar
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Joined: Tuesday, November 21, 2006 - 18:49
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Re: Whatever happened to the Efun-D ?

The controller has been recently been updated to handle more heat. Like all scooters battery balance in the string is an issue.

jdh2550_1
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Re: Whatever happened to the Efun-D ?

Hey - welcome back Dan! Long time no post. How are your Efun sales going?

John H. Founder of Current Motor Company - opinions on this site belong to me; not to my employer
Remember: " 'lectric for local. diesel for distance" - JTH, Amp Bros || "No Gas.

DanCar
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Re: Whatever happened to the Efun-D ?

Hey - welcome back Dan! Long time no post. How are your Efun sales going?

I'm waiting for bank charging solution before I push sales.

http://www.fun-ev.com

fisher727
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Re: Whatever happened to the Efun-D ?

Dan

I was reading you facts information page and it said that you could charge lead acid batteries at up to 104 degrees and Li-ion batteries up to 140 degrees. I have never heard this before in fact I have heard the opposite. Li-ion are consider very bothered by high temperatures. Where did you get this information. I tryed the Battery University site you recommended but that did not confirm your information.

Eric Fisher

DanCar
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Re: Whatever happened to the Efun-D ?

Its on the spec sheet for BB battery:
http://www.bb-battery.com/productpages/EB/EB50-12.pdf

fisher727
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Re: Whatever happened to the Efun-D ?

Dan

I see the temperature limit on the B&B batteries. Where did you get the 140 degrees charge limit on the Li-ion Batteries.

Eric Fisher

DanCar
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Re: Whatever happened to the Efun-D ?

http://www.thunder-sky.com/pdf/TS-LFP40.pdf
Thundersky changed thier spec. Now they are saying 75 degrees celsius, which is 167 degrees fahrenheit.

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