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?
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Support V is for Voltage
The controller has been recently been updated to handle more heat. Like all scooters battery balance in the string is an issue.
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.
I'm waiting for bank charging solution before I push sales.
http://www.fun-ev.com
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
Its on the spec sheet for BB battery:
http://www.bb-battery.com/productpages/EB/EB50-12.pdf
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
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.