Size:1-Pack WEINCELL (MRB625), REPLACEMENT FOR PX625/PX13 SINGLE BATTERY
PACKAGE WeinCells are the only mercury-free, exact-voltage replacements for
discontinued 1.35 volt mercury photo batteries. The zinc/air composition of
the WeinCell delivers the same precise voltage with steady, constant output
identical to that of the mercury batteries (alkaline replacements are
generally 1.5 volts, with an unstable output curve; this can result in
exposure errors of up to 2 stops).