Wein Cell MRB-400 | Mercury Battery Replacement

 WEIN CELL MRB-400 is a replacement battery for the old RM440R/V400PX.

Compatible with the following Pentax Cameras:

  • Pentax Spotmatic I
  • Pentax Spotmatic II
  • Pentax Spotmatic IIA
  • Pentax SP500
  • Pentax SP1000


  • Replaces RM440R and V400PX for Pentax cameras
  • Voltage output more stable than alkaline replacements
  • No camera adjustment needed
  • Wein Cell batteries are not activated until the pull-tab is removed - (Remove tab at least 30 minutes prior to use.)
  • Environmentally Safe

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