Ninebot ES2 Big problem

[Yasioo]

Hello guys :) !

I have a ES2 scooter, I buy used with damaged brake (all warranty stickers are OK, no one opens it )
I flashed with all of CFW with hundreds configurations.
I also changed SN with ninebot flasher ...

And? ....

When I pull the full power the motor starts at 35km and slows down to 20km (I dont know whats happening)
Second thing is when I turn on the headlight its slows again from 20 to 18 km/h

This scooter never run at the full speed 25km/h always 20km/h
I have the external battery .... still goes 20km/h

I flashed it once again and reset to factory settings then flashed by custom cfw ..
Its a oryginal one with all serials on the sticker and it all work in ninebot app.

Can someone help me? ... I'm really tired ;(

[tanidani]

ES2 dont have the posibility to run at 30Km/h.

You need 2 batteries for power.

Only ES4 can touch 30Km/h

You start at 30Km/h but your battery canot supply the need of motor controller, and after seconds the controler is overheating and cut the current.

You need to install a external battery.

[misiozol]

ES2 dont have the posibility to run at 30Km/h.

You need 2 batteries for power.

Only ES4 can touch 30Km/h

You start at 30Km/h but your battery canot supply the need of motor controller, and after seconds the controler is overheating and cut the current.

You need to install a external battery.

That is so wrong is so many levels, first of all it's not overheated but detects UNDERVOLTAGE and UNDERCURRENT, second all is possible but not allowable in software !