It is designed to replace Mercuric batteries and is commonly used in cameras and exposure meters.
The Wein Cell MRB675 is a 1.35V non-mercury Replacement for: MR44, NR44, EPX675, PX675, H-C, KX675, HD675, HC, V675PX, PC675, PC13, LR44, G13A, LR1154, RPX675, D76A, V13GA, PX76A, PX675A, GPA76, 1128MP, 1166A, S76. The Wein Cell MRB675 can be used in the Minolta Hi-Matic C/G/7sII, Ricoh Hi Color 35/35s, Vivitar 35EF, Minox B/BL, Olympus Pen D3, and many more.
The WeinCELL MRB675 is a custom zinc/air battery designed to replace banned mercury batteries. Unlike 1.5v alkaline replacements such as the LR44 whose unstable output can produce exposure errors, WeinCELLs deliver the same 1.35 V voltage and stability of output as did the mercury batteries. In contrast to hearing aid batteries which only last 1 month, the WeinCELL MRB675 batteries last much longer, typically nine months and some times up to a year. To achieve this longer life, the MRB675 uses a proprietary electrolyte and has only two small air holes, rather then the 7 larger holes found in standard hearing aid batteries.
To use the WeinCELL MRB675, the adhesive tab must be removed. This allows air to enter the cell. After about 30 minutes, the MRB675 is fully activated and ready for use.