The QS-S4 is the trigger throttle and LCD display used for the Bexly 8, Bexly 9, Bexly 10 & Bexly 10X.
It is also used for the Zero 8, Zero 8X, Zero 9, Zero 10, Zero 10X and Zero 11X, as well as many other electric scooters, including Grace 8, Grace 9, Grace 10, Kaabo, Apollo City, Apollo (City, Explore, Light, Pro), EVOLV (City, Pro, Tour 2,0, Tour XL), and many others.
VOLTAGE can be set between 48V – 72V (via the P3 setting).
Connection Type: 6-pin round waterproof plug – MALE CONNECTOR.
USB Port
The QS-S4 also features a USB port that can supply 5V at around 500 mA to 1000 mA of current. It’s primarily intended for flashing the unit, but it could potentially be used for charging USB accessories though we do not advise it as current-thirsty USB devices risk frying your throttle unit.
How to Access Settings on the QS-S4 Throttle
- Power on your scooter.
- Hold the Mode + Power buttons (3-5 seconds) to access the P-setting menu.
- Use the Mode button to toggle through P-settings.
- Press the Power button to select the P-setting to adjust.
- Press Mode button to increase the value, and Power button to decrease the value.
- To save settings, allow the LCD display to timeout (3-5 seconds) or long press Mode + Power buttons to exit the menu.
QS-S4 Error Codes – When the LCD display controller detects an error, you’ll get the triangle and exclamation mark symbol, and it will display the fault code just above the battery life display.
QS-S4 Error Code Meaning
2 – Brake sensor
6 – Battery under-voltage
7 – Motor fault
8 – Motor/Hall sensor
9 – Controller fault
10 – Controller RX fault
11 – Controller TX fault
12 – BMS communication error
13 – Headlight error
