Fix Your Personal Electric Vehicle
Get your scooter or e-bike back on the road. Find master error code lists, DIY soldering guides, and mechanical tire hacks for your PEV.
Browse Repair Hubs
E-Scooter Repair Hub
Error code indices, controller diagnostics, tire replacement manuals, brake tuning, and stem wobble fixes.
E-Bike Conversion Hub
Mid-drive motor installation (Bafang, Tongsheng), bottom bracket removals, PAS sensors, and chain maintenance.
Battery & Electronics Hub
Lithium battery voltage diagnostics, safety margins, multimeter testing, and BMS protection wiring.
Featured Diagnostics & Repairs
How to Fix Xiaomi M365 / Pro Error 14 & 15
A complete step-by-step DIY diagnostic and repair guide to fix "Error 14" (throttle sensor error) and "Error 15" (brake sensor error) on Xiaomi M365, Pro, 1S, Essential, and Pro 2 electric scooters.
Xiaomi M365 / Pro Error Code Master List
The ultimate database of all Xiaomi electric scooter error codes (M365, Pro, 1S, Pro 2, Essential, and Mi 3). Decode the status lights, beeps, and display screens with actionable DIY fixes.
How to Test an E-Bike Battery with a Multimeter
A professional-grade diagnostic guide to safely measure e-bike or e-scooter battery voltages. Learn to pinpoint BMS faults, broken cell links, or charger connector problems using a digital multimeter.
How to Change a Xiaomi M365 Tire
The definitive step-by-step tutorial on replacing front or rear tires and inner tubes on Xiaomi M365, Pro, and 1S scooters. Includes the zip-tie installation hack to save your hands and rims.
Calculators & Diagnostic Utilities
Battery Range & Voltage Sag Calculator
Calculate realistic range (km/mi), watt-hour capacity, 24V-72V full-charge and cutoff voltages, and digital multimeter state-of-charge tables.
Interactive Error Code Diagnostic Tool
Search error codes for Xiaomi, Ninebot, and Bafang. Look up beep patterns, multimeter pinout tests, and step-by-step DIY fixes.
Compiled by Real Light Electric Vehicle Technicians
Expertise & Safety
We draw schemas, test battery balancer wires, and verify transistor specs before recommending any replacement parts.
Affiliate Integrity
We only refer to parts and tools we have bought and tested in our workshops. Zero sponsored reviews.
Editorial Transparency
Every repair guide shows the update timestamp, physical environment demands, and specific safety hazards.