Dangerous DIY instructions instead of customer service
I purchased an electric bike drive system with a bottle‑shaped battery from 100G. After only three weeks, the battery stopped working completely. Instead of offering a proper replacement, the company wanted to send me only the top “cap” of the battery and instructed me to heat the battery with a hairdryer, twist off the glued cap, and re‑attach and re‑glue the new part myself. This is a safety‑critical component, and such a repair is neither reasonable nor compliant with CE standards. A manufacturer who expects customers to perform repairs on lithium batteries themselves shows very little sense of responsibility. A full replacement battery was refused, and I was left with an unsafe DIY repair suggestion. This is not professional customer service and not an acceptable way to handle warranty claims.