R10 (also # 4 , 927 , BF , U8 , 332 , etc.) - the standard size of galvanic cells and batteries .
In the USSR, the elements were designated 1.3FMTs-0.25, FBS-0.25 (dry battery, 0.25 Ah), later 332 (with saline electrolyte) and A332 (with alkaline electrolyte), trademark “Prima.” Currently produced by only a few manufacturers.
In the USSR in the 1970s and 1980s, 332 elements were used in dosimeters , in military chemical reconnaissance devices (illumination of the device when working at night), in army field telephones , in measuring devices ( ohmmeters , transistor testers), in medical instruments ( laryngoscopes ), etc.
In household electronic equipment, elements 332 were not used until the beginning of the 1990s (not allowed by GOST ). One of the reasons for the ban on the use of such batteries in household equipment is to prevent a shortage of batteries for special equipment. Only in the late 1980s did the Soviet radio-electronic industry produce a small number of compact radios and cassette recorders ( players ) for these elements, as well as cases for three 332 elements in a 3336 battery size. Also, this type of elements was used in some children's toys and the first portable civilian radio stations (Ural-R, Laspi-R, etc.).
Currently, 332 elements are used in special equipment to a limited extent.
- Length - 37 mm, diameter - 21 mm.
- EMF - 1.5 V for galvanic cells and 1.2 V for batteries.
- Mass - about 30 g (for galvanic cells).
3R 2R10 batteries are also available , made up of two R10 cells (length about 75 mm).
- Malinin R. M. Handbook of amateur radio designer. - M.: Energy, 1973, p. 229
- Taganova A. A. Bubnov Yu. I. Orlov S. B. Sealed chemical current sources. - M.: Khimizdat, 2005, p. thirty