Mention not!
See I haven't tried out that functionality yet so can't say for sure. Transferring manually should work though I have doubts on automatic deduction. Maybe someone else can clarify on that!
FYI you can setup autopay mandate via their website through UPI, so if the balance goes below a threshold amount it will automatically recharge the tag with the input amount.
Last but not the least there's a low balance alert (you can enable in mobile app) which notifies you once the balance falls below ₹100!