Thanks for your reply. As I said, I have drilled the old lock and am able to remove the battery. I have also purchased to new lock set like the one you posted. I just don't think the instructions are specific to my bike.
I've been riding e-bikes for over a year. I currently have two e-bikes by Momentum. A Transend E+ and a LaFree E+.
I have a problem with the Lafree that I hope someone on this site can help me with. I bought the bike as Demo, the dealer did not have a key for the battery and Giant/Momentum...