Well done! 10 kohm on 3.6V gives a current of 0.36 mA.
EDIT 2 x 10 kohm on 3.6V gives a current of 0.18 mA.
This nicely answers two other threads, Wio Terminal Chassis Battery monitoring and How do I get the battery voltage?.
Let’s hope Seeed will include it into the coming revision of the Wio Terminal battery extension.