Mercury Free

Exact-voltage replacements for the now unavailable mercury cells used in hundreds of cameras and meters.
Environmentally "green," 1.35V, zinc-air WeinCells are available to replace PX625/PX13, PX675 and RM400 batteries.

Camera Battery Cross Reference Chart

Micro-Tools Europe is the Exclusive Distributor of WeinCELL's to Europe (excluding the UK)

For Dealer Pricing in Europe Call +49 (0)2553 977 774 or Fax: +49 (0)2553 977 775
For Dealer Pricing Outside of Europe Call 707.446.1120 or Fax: 707.446.3319

To place retail orders in Europe you may buy On-Line
To place retail orders outside of Europe you may buy On-Line

WeinCell™ Mercury-free Replacement Batteries - new life for your old camera!

WeinCell is a revolutionary new zinc/air battery designed to replace environmentally-unfriendly (banned) mercury batteries.

Because of their extremely stable output curve, mercury cells were used in many cameras and exposure meters to ensure the most accurate exposure reading possible. But the disposal of mercury batteries has become an environmental problem, and an increasing number of states and other governments are responding by prohibiting the cells altogether.
Alkaline replacements don’t do the trick

Several battery manufacturers now offer alkaline batteries as replacements for their discontinued mercury cells. In most cases, the replacement does not have the same voltage as the mercury battery it is replacing (usually 1.5V instead of 1.35). And, the unstable output inherent with alkaline batteries can result in exposure errors up to 2 stops! Only WeinCells deliver exact voltage and stable output consistent with mercury batteries.

There is a WeinCell to replace each of the following mercury batteries: PX625/PX13, PX675 and RM400. Each has performance identical to the battery it replaces- exactly what you need to get those classic cameras shooting again.
• Compatible with any camera or meter specifying the respective mercury battery (see battery guide).
• Three models available; compatible with hundreds of cameras and meters.
• Voltage output more stable than alkaline replacements.
• No camera/meter adjustment or adapters required.
• Up to 10-year shelf life; the WeinCell is not activated until the pull-tab is removed (removing batteries from equipment and replacing tabs prolongs battery life).
• Environmentally safe.
WeinCells have been tested and recommended by top trade magazines:
Bob Shell, Shutterbug Magazine
“The WeinCell uses an environmentally safe electrolyte which exactly duplicates the 1.35V output and discharge curve of the defunct mercury cells.”

“So far we have tested the WeinCell in most types of cameras and light meters designed for use with mercury cells and have not found anything yet that they do not work in.”

“Silver cells and alkaline cells emphatically do not work correctly in equipment designed for mercury cells because they have the wrong voltage and discharge curves and can cause exposure errors of as much as two f/stops. “

James Bailey, Popular Photography Magazine
“...alkaline batteries are a poor substitute [for mercury cells], even if they’re the same size and deliver a similar initial output.”

“In our trials using a Gossen Luna-Pro exposure meter, we got the same readings whether we used a brand-new 625 mercury cell ...or WeinCells.”

“They (zinc/air cells) contain far less toxic material than do mercury cells, which makes their disposal more environmentally friendly.”

“...the WeinCell has essentially the same energy capacity as a mercury cell.”

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