Here's a rule of thumb regarding the rage of the Super Soco TC 30 Ah battery when riding in hilly terrain or through mountains:

1. One battery = 65 km on flat terrain
2. Two batteries = 130 km
3. Subtract 1 km from the range for every 60 m uphill
4. Use Google Maps Bicycle view for calculation of the uphill balance
5. Change battery at 55%-50% SOC to avoid melted connectors
6. Keep in mountains at least 15% SOC = 10 km = 1 hour charge
7. Recharge 10 km/h with standard charger, 20 km/h with two chargers
8. avoid hills which are steeper than 15% (20% for a very short distance)

This 65 km minus 1 km / 60 m is no rocket science but it works very well!

My TC is mountain tested: 
https://hdmeteo.wordpress.com/super-soco-tc-la-palma/ for your viewing pleasure