To find out more about watch battery construction and chemistry, click here. This applies especially to Zinc-Air cells, which at first glance may appear to be a good alternative to mercury batteries. The only exception to this is the Accutron 214 model, which has a small battery hatch on the back.ĭO NOT use batteries based on any other cell chemistry than silver oxide or mercury, or severe damage to your watch may occur due to leaking chemicals or gas, which have nowhere to dissipate in a sealed watch except onto all the working parts. It is strongly recommended that you do not replace batteries yourself, as special tools are required to open the watch case without damaging it. The Tuning Fork watches manufactured by Esa (e.g the f300 Omega) were designed to run on either mercury or silver oxide batteries without any adjustment, provided the last repairer to work on the watch set up the index mechanism according to factory specifications.
In most areas of the world, mercury-based batteries are no longer available, due to environmental concerns related to the safe disposal of them. The pic (left) shows an original 214 all-metal "top hat" cell, before 387 cells with the plastic spacer became available. What is the correct battery for my Accutron?īulova Accutron watches were originally designed to use Mercury batteries of 1.35 volts, since they were the only type manufactured then.
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