John Gulliver
Contributor
The Instruction manual for one of my YS-60 TTL/N strobes (I have two strobes but only one manual) specifically warns against the use of batteries other than manganese, alkaline or Ni-Cd whereas Sea & Sea's 2004 catalogue states "Battery requirement 4 x AA Alkaline, Ni-Cd or Ni-MH batteries" for this strobe. Very confusing!!! Did Sea & Sea make two versions, an earlier one that did not take Ni-MH batteries and a later one that did? The serial numbers of my YS-60's are 9612600926 and 9612503187 if that helps.