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Hi Louis, after reading a post on Endless Sphere Forum, I am suspecting my battery system from you is with a problem. May be this is the reason why I had the problem with the motor or controller.
The output of the charger is 58.5V. But after fully charged (the green light on) and the charger still hooked up for another few hours, the voltage of the battery is still 54.4V. (According to Endless Sphere the battery voltage should be as high as 59V or at least the same as the output of the charger.) The voltages of each cells are 3.36, 3.36, 3.36, 3.35, 3.35, 3.35, 3.36, 3.36, 3.47, 3.52, 3.48, 3.47, 3.38, 3.46, 3.41 & 3.44V. And this shows the balancing has not been done properly by the BMS. Could you please review and advise what is having problem? The battery, the charger or the BMS?

tmho wrote:Hi Louis, after reading a post on Endless Sphere Forum, I am suspecting my battery system from you is with a problem. May be this is the reason why I had the problem with the motor or controller.
The output of the charger is 58.5V. But after fully charged (the green light on) and the charger still hooked up for another few hours, the voltage of the battery is still 54.4V. (According to Endless Sphere the battery voltage should be as high as 59V or at least the same as the output of the charger.) The voltages of each cells are 3.36, 3.36, 3.36, 3.35, 3.35, 3.35, 3.36, 3.36, 3.47, 3.52, 3.48, 3.47, 3.38, 3.46, 3.41 & 3.44V. And this shows the balancing has not been done properly by the BMS. Could you please review and advise what is having problem? The battery, the charger or the BMS?

Hello Tmho, the cells voltage is 3.65V when the battery was initially assembled, after using on ebikes for some time (for example 1 year, yours battery was produced in 2008) its capacity will drop a little and each cells's voltage will not have exactly same voltage, its allowed difference is 200mV.

After you use charger to charger the battery fully, and keep hooking the charger with the battery, the battery's voltage will be same as that of the charger's output, after you remove the charger, the battery's voltage will drop a little after about 5 minutes.

As of the problem you you said on the forum we have checked the controller you sent back and its 3 speeds function works well.

You need to know the controller for front wheel kit and rear wheel kit is differently setup although the controllers have same outlook, if you mix them you will see the 3 speeds function donot work.

Thanks.

Do you mean my battery system is with no problem?
Please see my post on Endless Sphere (http://www.endless-sphere.com/forums/vi ... =2&t=31132), most people think that there is something wrong.

hello Tmho,

have pasted reply there.

Thanks.