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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Mercury cells
I would like to know how long for is possible to store, and in wich
conditions (temperature), the out of production mercury cells 1.35Volts PX625. They are infact now rare, due to the mercury contained iside that creates enviroment contamination problems. On the other hand it is no easy to obtain with other batteries the same perfrmances on some apparatus, due the constant voltage output. Considering that I still have a couple of PX625, I would like to know how long may I expect to have them ready to work with my exposure meter Gossen Lunasix3 that accepts also the new alkaline 625 but showing no useful indications due the different voltage ( using two PX625 there is a difference of plus 0.3 Volts). Is there any serious adapter to use with different battery type? I was thinking to choose Silver-oxide cells and do not take in consideration air-zinc technology because of the short life of cells: less than one year, even if you do not use the meter, from the moment you lift the label. MOST IMPORTANT: How can I manage the mercury exausted cells? Can I put them in the "normal" exausted batteries bin? Thanks. Carlo |
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I would like to know how long for is possible to store, and in wich
conditions (temperature), the out of production mercury cells 1.35Volts PX625. Carlo- The reason mercury cells were outlawed, is because they are extremely hazardous to the environment. If they end up in a land-fill, the mercury will find its way into the water supply, which will cause illness and/or birth defects. They must be disposed of as hazardous waste. I believe that refrigerating a battery will slow down its self-discharge. There is another approach you can take to use commonly available silver oxide cells. There is an adapter that uses a semiconductor to reduce the voltage to 1.35 volts, and claims to have a resulting discharge curve almost identical to the mercury cell. Take a look at http://www.criscam.com/mba.htm. I have not tried this adapter myself, but plan to. I have several pieces of photographic equipment that use the PX-625. Fred |
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"Carlo G" wrote in message ... | I would like to know how long for is possible to store, and in wich | conditions (temperature), the out of production mercury cells 1.35Volts | PX625. ... Either buy them in Canada or Mexico or use the hearing aid air cells. The latter only last a year but they're easy to find. N |
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"Fred McKenzie" wrote in message ... I would like to know how long for is possible to store, and in wich conditions (temperature), the out of production mercury cells 1.35Volts PX625. Carlo- The reason mercury cells were outlawed, is because they are extremely hazardous to the environment. If they end up in a land-fill, the mercury will find its way into the water supply, which will cause illness and/or birth defects. They must be disposed of as hazardous waste. What about fluorescent tubes, HID lamps, and other mercury-containing devices? Are mercury batteries really any worse? Wouldn't recycling/mercury recovery be a better option than banning them? |
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"James Sweet" wrote in message news:Nt3Dd.26392$2X6.5003@trnddc07... | What about fluorescent tubes, HID lamps, and other mercury-containing | devices? Are mercury batteries really any worse? Wouldn't recycling/mercury | recovery be a better option than banning them? Doesn't matter. You can't sell non mercury-free batteries any more in the US. Senators are involved and speeches have been made. Bribes were not paid so it's a done deal. WeinCell Mercury-Free Batteries - New life for your old camera! 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. For questions regarding Wein Photo Products, please contact or visit www.omegasatter.com. |
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