The Sanyos I have are made in Japan and are good quality AFAIK. I wouldn't sweat it. You want to watch out for the no-names, made in China, etc.
Personally, I prefer Streamlight 123A cells, then Surefire for my high drain applications. I would be fine using Titanium or Batterystation brands for lower drain applications.
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.