Upgrade your throttle on your electric scooter or e bike with this 24 volt 5 led with key which is a much better way to monitor your battery and keep it safe with a key!!. 

     This throttle comes with a convenient 5 LED battery level indicator(dead,25%,50%,75%,100%) and a key switch that can be wired to your controller to prevent others from riding your bicycle or scooter without the key. Also includes with matching left side grip. Note-Yellow light only starts to light up when your getting low.

 Installation instructions.
Three wires (red=5V, black=ground, green=signal) provide standard throttle function.(does not need the yellow wire hooked up as you may have had to before)
Two additional wires (yellow and blue) are a switched 24V and provide the level for the LEDs.Which would hook up to your on/off switch or can be used to run a headlight..