Do you need even more autonomy? Get hold of a second battery identical to the one delivered with your bike. It recharges in less than 2 hours for an autonomy of between 50 and 90km according to the assistance used.
219 Wh
Back lights included
Comes with the charger and a key to manually unlock the battery
Loss of 25% efficiency after 700 cycles, i.e. 49,000km