bypass hx x7 scooter speed limit on half battery SOC

[brone]

Hello,

Basically I have my own battery installed on this scooter, but when the battery reaches nominal voltage (3.6 per cell) either the display or the controller of the scooter limits the power significantly - any way to bypass this limit ?

 

[lnanek]

Maybe it's doing you a favor? At low SOC the voltage sag from full throttle usually forces the low voltage cut off to trip anyway. More expensive controllers are programmable, slightly less ones support open source software replacement or an advanced settings option, but many other cheaper controllers you get what you get. So upgrade to more expensive controller might provide this, but likely wouldn't be as beneficial as upgrading the battery. I've seen people switch in booster packs too, to up the voltage, but that's too much of a fire risk for me.

 

[neptronix]

How significantly? do you have a readout of the watts/volts?

 

[aridejunkie]

Hello,

Basically I have my own battery installed on this scooter, but when the battery reaches nominal voltage (3.6 per cell) either the display or the controller of the scooter limits the power significantly - any way to bypass this limit ?

I got my x7 with spares too. I have 50 hoverboard batteries laying around which work great for it using a little bag on the handlebar.
Run in to the same issue and pretty quick per battery since they're only 4.2Ah. but in the end it's better than the BMS cutting you off due to low current.
Should add mine doesn't slow down too much until around 20-30% left

 

[glennb]

Hello,

Basically I have my own battery installed on this scooter, but when the battery reaches nominal voltage (3.6 per cell) either the display or the controller of the scooter limits the power significantly - any way to bypass this limit ?

Off the top of my head …

Indirectly, by:
A) using a larger capacity battery, or;
B) adding a series group to raise the voltage

Less indirectly, by:
A) injecting a higher voltage into the appropriate part of the circuit
B) altering component values in the appropriate part of the circuit

Directly, by:
A) editing the code.