Mahle Smartbike Systems X20 External Range Extender Battery – 36V/173Wh

MAHLE X20 optional Range Extender Battery adds 173Wh to extend your ride from 50-70km (30-43miles) when needed.

– Battery mounts in place of a water bottle when needed, and it’s holder will double as a standard bottle cage when the battery is not needed
– Lightweight at 1.1kg
– Charges to 80% capacity in under an hour