If you want to go extra far with your Vässla, you can always supplement with an extra portable battery. This extends the range from 40-60 km to 80-120 km on a charge with two fully charged batteries. The Battery is also suitable for Vässla 1.
PS: ALWAYS CHARGE YOUR BATTERY AT LEAST 12 HOURS BEFORE YOU USE IT!
Li-ion 60V 20Ah/1200Wh Premium 18650 cells from LG/Panasonic or Samsung.