Originally posted by boriscleto
CRIS sold a MR-9 battery adapter with a voltage regulator if you wanted to spend the $$$.
They still do, though I was able to buy direct from the maker in Japan for somewhat less.
Kanto Camera | Battery Adapter
It is also good to note that Kanto also makes a voltage reduction adapter for the SP/SPII (H-B model on page linked above) that is built into a replacement battery chamber cover. Given the scarcity of that part, it may be worth the purchase of the adapter just to get the cover!
Steve
Last edited by stevebrot; 08-02-2019 at 10:43 AM.