E-bike conversion kits: the battery, charger and compatibility risk
Read the full briefing →An e-bike conversion is not just a motor added to a bicycle. The battery, charger, wiring, management system and installation have to work safely together—and online or second-hand parts can make that difficult to verify.
- London firefighters attended 206 e-bike and e-scooter fires in 2025
- 171 of those incidents involved e-bikes and 35 involved e-scooters
- London Fire Brigade says battery failure, conversion kits and chargers are often identified in investigations
- Separately purchased batteries and chargers can be incompatible
- LFB says damaged, counterfeit, overcharged or incorrectly charged batteries can fail