In general 1.5V batteries are OK
Some people claim that their camera meter is off after this change of voltage but my personal experience with the SP, SPII, and SPF is that it works fine (even for slides)
RolloR, 3V? you only needs 1.5
In the
Spotmatic Group @yahoo there is a file that says:
Originally posted by spotmatic group @yahoo: I purchased a 392 Silver Oxide battery at Radio Shack. I have found
that it works great in the Spotmatic in lieu of the mostly
nonexistant mercury oxide battery. It was $2.60 US. On the back it
lists all the batteries that it supersedes - perhaps other batteries
that could be used in the Spotmatic?:
Type K
10L125
RW27
RW47
247B
WL1
G3
2
547
8009
GP92
392
1135SO
SR41
D392
D384
SP392
V392
SG3
SR41W
247
WF3