Real-time voltage monitoring and battery protection: This extended E-Bike thumb throttle features a bright LCD display that shows real-time voltage (12V-99V auto-detection), allowing you to monitor battery values for lead-acid, lithium, dry-cell and water batteries. Universal compatibility and auto voltage detection: Works with all EV types (12V-99V), including E-Bikes, E-Scooters and E-Motorcycles. The smart system automatically identifies the battery voltage, ideal for Li-ion, ternary Li and LifePO4 batteries. Includes wiring for 3-gear/5-gear modes, reverse gear, cruise control and power-lock functions. High-efficiency throttle control and 3-gear modes: A precise linear Hall sensor and up to 98% efficiency provide smooth acceleration and responsive speed control. Choose between 5-wire (basic) or 7-wire (multifunction) versions for high/mid/low gear, horn, cruise or reverse functions for your E-Bike controller. Waterproof design for all weather: Built with rugged ABS plastic and sealed connectors to resist rain, dust and vibration. The 1.8-meter extension wires (color-coded red/black/green/yellow) enable flexible installation on MTBs, road bikes and fat-tire E-Bikes. Applications and scenarios: - Upgrading multiple bikes in a mixed-vehicle setup (E-Bike, E-Scooter, E-Motorcycle) that use 12-99V batteries, with auto voltage detection and LCD monitoring. - Installing on mountain bikes or fat-tire E-Bikes that require longer wiring and weatherproof performance. - Replacing a basic throttle to gain 3- or 5-gear mode support, plus horn, cruise and reverse functions for enhanced control.