WeinCell MRB400 (PX 400), 1.35V Zinc, Mercury Replacement Battery

WeinCELL is a revolutionary new custom zinc/air battery designed to replace environmentally-unfriendly mercury batteries. Alkaline replacements do not do the trick. Only WeinCELLs deliver exact voltage and stable output consistent with mercury batteries. Not to be confused with the hearing aid batteries that only last 1 month, the WeinCELL batteries last 1 year in the camera with regular use. Compatible with any camera or meter specifying the respective mercury battery The voltage output is more stable than alkaline replacements, meaning a more accurate light meter reading than an alkaline or silver oxide replacement. No camera/meter adjustment or adapter is required.

This MRB400 replaces a RM400R and V400PX Battery

Compatible cameras include:

• Pentax Spotmatic 
• Pentax Spotmatic II
• Pentax Spotmatic IIa
• Pentax Spotmatic SP500
• Pentax Spotmatic SP1000

and many more!