HTCC-AB01 Power supply and charging

Hello everyone. Could you please to explane me that how to connect Li-Pol 3.7V 2500mAh battery to HTCC-AB01 without loosing any functions and protections if I haven’t a 1.25 connector on battery wires? Which +3V pin must be proper used to derect soldering?
As I correct understood that the VS pin can be used for wireless QI receiver for charging or not?

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