If you buy a Trekking 7 now, you can also add a spare Hepha BT-P100 battery to your cart for only 300€, which costs 599€ originally.

HEPHA BT-P100

36.9V - 19.2Ah - 708Wh

Removable battery: Yes

Charging time: 0-50% 1.6H; 0-80% 2.6H; 0-100 % 4H