I don't beleave that Inon has ever even sold a hard wired cord for the strobes and have always relied on Sea & Sea for cords.
Regarding the Sea & Sea YS-D1 I did a review on the strobe for Under Water Photography magazine (uwpmag.com issue #69) and I did not have the battery problem. I did use the strobes in manual quite a bit because that is my shooting style. While I thought the strobes did a good job I will continue to stay with the Inon strobes based on my past success in 1000's of dives with zero service issues. I would also highly recommend the color temp filters for wide angle use with the current Inon Z-240 D-2000 and S-2000 strobes. I have the 4900K -0.5 stop filters and I am sure that the 4600K filters work just as well.
Edited by Phil Rudin, 17 January 2013 - 07:45 AM.