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 discharge curve with steady, constant output identical to that of the banned mercury oxide batteries (alkaline replacements are generally 1.5 volts, with an unstable output curve; this can result in exposure errors of up to 2 stops).
These environmentally friendly batteries are compatible with any camera or meter specifying the listed mercury battery. Voltage output is more stable than alkaline replacements. No camera/meter adjustment or adapter required.
Works with Canon F-1, Canonet, Olympus OM-1, Yashica Lynx 14, Yashica-Mat 124/124G, Nikkormat F, Minolta Hi-Matic 7S, Minolta SRT etc..