Amazon pay balance has 2 sections
Wallet and gift balance.
Wallet has a limit of 1L for kyc users.
I don't think gift balance has any limit for kyc/non kyc users.
amazon pay gift voucher when added adds to gift balance not wallet balance.
When you add money it gets added to wallet balance...
Concept of charge is no fixed limit, it's dynamic/flexible limit. I.e. there is a internal hard limit which varies from time to time.
It's not limitless/unlimited.
The varying hard limit is unique to each customer and is decided based on their financials, recent usage and history of payments etc.