No problem to discharge at 1A. As long as the battery nominal voltage is 5V or less...
Specs are: 50W max charge, 5W max discharge capacity.
A new 6S LiPo propably have a voltage of appr 22V. Max discharge rate at 5W is appr 0,25A. The charger can`t handle more.
For charging at 6S you won`t get more than appr 2 - 2,5A.