Ezip 750 Scooter, go from 24v to 48v, what speed?

[sk8norcal]

Has anyone else tried upgrading one of these things to lithium? 36 votl 20ah pack will give me some real range and weigh a lot less than the stock pack.

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[Green Machine]

omg....im gonna try to hook a 48 volt 18650 ncr battery to stock controller tonight and see how it goes....if i blow it no problem im gonna replace the controller anyway.

What controller do you guys recomemend?

 

[wineboyrider]

Yiyun yk43-b is a nice brushed motor controller.