There is currently nothing that requires an inspection of the batteries to be carried, nor a requirement to inform the crew.
I'd rather be aware that I had a potential problem aboard than to continue with the "I've got a secret" game of shippers masking DG as regular cargo in order to get lower shipping rates.
The acknowledgement that lithium-ion batteries CAN be dangerous is similarly a huge step in getting to either ban them completely from air shipments or place them in a suitable DG category where they are documented and tracked.