wilsonlaidlaw1
Well-Known Member
Yushke,
Whichever type of battery you buy, please make sure that it is not a mercury one. Although these are now banned for environmental reasons in many countries, they are still sometimes to be found on smaller photo shop shelves. I am fairly sure, for ex&le, that if you find a PX28, it will be mercury. When these cells go flat, they very quickly start to leak a horribly corrosive gel that probably has killed more cameras in the last thirty years than any other single cause. Also be careful about lithium cells, as they are often somewhat over-voltage and that together with their low internal resistance can cause incorrect readings from the exposure meter and even damage other electronic components. Avoid the cheaper zinc/air also, as their performance is distinctly sub-standard. Stick to silver oxide and buy a known make - Duracell, Fuji, Panasonic, Kodak, Energizer and Renata are among the best. The 4LR44 is, as you assumed, 4 button cells but in a neat little sealed tube and therefore, less open to bad contact than 4 separate cells. Wilson
Whichever type of battery you buy, please make sure that it is not a mercury one. Although these are now banned for environmental reasons in many countries, they are still sometimes to be found on smaller photo shop shelves. I am fairly sure, for ex&le, that if you find a PX28, it will be mercury. When these cells go flat, they very quickly start to leak a horribly corrosive gel that probably has killed more cameras in the last thirty years than any other single cause. Also be careful about lithium cells, as they are often somewhat over-voltage and that together with their low internal resistance can cause incorrect readings from the exposure meter and even damage other electronic components. Avoid the cheaper zinc/air also, as their performance is distinctly sub-standard. Stick to silver oxide and buy a known make - Duracell, Fuji, Panasonic, Kodak, Energizer and Renata are among the best. The 4LR44 is, as you assumed, 4 button cells but in a neat little sealed tube and therefore, less open to bad contact than 4 separate cells. Wilson