Blogs

This is summer from Desire Power Co., Ltd which is a leading battery Exporter specializing in LiFePO4, NI-MH, Li-Po batteries and so on.

As we all know, Lifepo4 battery is very popular in the world market, and our Desire Power Lifepo4 batteries mainly have these outstanding advantages: safety, long cycle life, low self discharge, low inner resistance and so on.

Certification
All our products have been certificated and approved by ISO9001:2000, CE, UL and RoHS.

hi all i love riding to work on electric.
scooter. but i really need to get fit but .not ready to give up electric..!!
so why not combine the two electric bike !! i carn't afford the electric pedal motorbike it's german forgotten .
the name but its sumthing like £10.000/ £20.000 wow .
thats steap ..
well what i am after is a super efficient motor / latest technology battery super light and compact .
and needs to be a mtb ? but needs to look very moden / light. have at least 5 gears. and needs to be ( very modern )!! looking.

iv found a hand soldered chip in my new emax in a out of place place does any one know what it does. the chip says on it 725158 sfh6 156-3 x017 allso there is a small ceramic cap 104 attached.
look at the pic it is at the side of the 6 larg caps look for the small orange ceramic cap

hi all ive just come back from Tenerife .
and saw loads of vectrix.es and also on the last day managed to sneek.in
to the local constabulary hq. i/e in the police station and and went throw the big black doors that
am shoure no one escapes from.
and low and behold the jewl in the crown loads of vectrixes getting fed all around me i was outnumbered.
i had no chance and a foreign woman said to me think she was speking spanich said what you doing in hear....
are you police.manurm urm no no me me .

This morning I received my hub motor and accesories from Golden moter.
It was a big day for the little Voy.
Today my new motor came in.

hi there i have two motor witch i use both to test,1 is a unite 750w 36v blue motor rated at 2800 rpm,and a my1020 1000w 36v black motor rated at 3000rpm,my question is the following,why is my bike slower whit the 1000w motor ?is dose have more toque but its slower on top end even if it stats 200 more rpm than the 750w motor...
i used the same gear and state of charge,

best regard

Ok So first of all Im Not experienced in electric motors or gas powered. I got My schwinn stealth 1000 about 2 years ago. It Was fun for half a year till the battery started crapping out. It only lasts for 15 or 20 mins(If I go slow). It used to last Half an hour at full speed. I want it to Run 2 hours at full speed. So I can Travel About 40 Miles distance. I was wondering if there was a way to replace the Battery with a tractor battery or something bigger ant put a limiter or capacitor or something to keep the Moter from being Fried.

I've got a controller out of a fairly new 4 wheel Chinese mobility cart (has a steering wheel and looks like a tiny one seat golf cart). The part # on the controller is CID 932 B9D. It is a 10 connector controller (one connector is not used) with built in reverse - 36 volt 40 amp with the 31.5 voltage protection. The controller looks identical to a CT-660B9, but with 10 connectors. Any Idea where I could locate one if these? Is there another controller that I could use (and not have to do extensive modifications?
Any suggestions would be appreciated.

Just learned how to insert pictures.
This is the schematic for dual battery sets.

Once again, if you wire your batteries together with out the diode, they will work, but as the batteries age, the worst one will pull down the whole system.

I bought a used ebike purely for the experience of upgrading it.

I stared with a Electra Voy bike/scooter which I found on Craigslist and boght for $150. It has a 36V lead acid battery set which feed a 180W hub motor.
My ultimate goal (and I have all ready ordered parts) is to upgrade it to a 48V, 1000W, LiFePo4 system with regen breaking.
I ordered the motor and controller (with regen breaking) from "Golden Motor" ($400), and the LiFePo4 battery with Battery Management System from a Chinese distributor through ebay($400).