Wein Cell MRB400 1.35v Mercury Replacement Battery

Wein Cell MRB400 1.35V Mercury Replacement Battery

Maintain the accuracy of your classic photographic equipment with the Wein Cell MRB400, a reliable and environmentally friendly replacement for discontinued PX400-type mercury batteries. Specifically designed for vintage cameras and light meters originally requiring 1.35V mercury cells, this zinc-air battery ensures consistent and dependable performance without the need for exposure recalibration in most cases.

Unlike standard alkaline alternatives, which often produce a higher and less stable voltage, the MRB400 delivers a steady 1.35V output with a discharge curve closely matching that of original mercury batteries—helping preserve accurate metering and reliable results.

The MRB400 is compatible with equipment designed for PX400, RM400, V400PX, and EPX400 battery types, making it an ideal solution for maintaining older devices in proper working condition.

Utilising zinc-air technology, the battery is activated when the sealing tab is removed, allowing air to enter and initiate the chemical reaction required for power generation.

Key Features:

• 1.35V zinc-air battery for PX400-type mercury replacements
• Designed for vintage cameras and light meters requiring 1.35V cells
• Stable voltage output for accurate exposure readings
• Replaces PX400, RM400, V400PX, EPX400 and equivalents
• Typically no recalibration required when replacing mercury batteries
• Mercury-free and environmentally friendly design
• Activated by air exposure after tab removal

A dependable and precise power solution, the Wein Cell MRB400 helps keep your classic equipment performing as intended while preserving accurate metering and image quality.