Per the manual;

"Main charging lead
a. Connect to the main charge leads of your battery using the appropriate connector type. Visit your local hobby dealer for assistance if
the plug on your battery and charger do not match.
i. WARNING: Never try to force connectors together.
3. 2s-3s JST-XH Balance ports
a. Connected your LiPo balance plug to the appropriate port to enable LiPo balance charging.
i. If your battery has a different connector, do not try to modify your connector or the charger. Visit your local hobby dealer and
purchase a Radient Primal/Ascend Universal Balance Adapter (RDNA0003) for use with your balance plug"