You don't want to be stranded in the wilderness at long distances and at high speeds for a whole day, being forced to pedal backwards on two legs. Well, one battery is not enough, two is fine and three is not enough...
Features - 2.5 Hour Quick Charge - Range: 50-120km
Technical Info - 360Wh Samsung Li-Ion Detachable - Weight: 2.8kg - Sport Mode: Up to 50 km - Comfort Mode: Up to 80 km - Energy Saving Mode: Up to 120 km - During Charging: 0°C - 40°C - During Use: -10°C - 50°C - Storage: -10°C - 30°C