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Author Topic: Replacement batteries for MFJ 107B 24 hour clock  (Read 1000 times)
AG5T
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« on: April 30, 2011, 08:45:14 AM »

Does anyone know what kind of battery to use for a replacement for the MFJ 107B 24 hour clock? It appears to be some type of watch battery, but I misplaced the original battery which had stopped working. Thanks. Could it maybe be model 376??
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AC5UP
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« Reply #1 on: April 30, 2011, 10:32:33 AM »

http://www.mfjenterprises.com/man/pdf/MFJ-107B.pdf
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KB1LKR
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« Reply #2 on: May 01, 2011, 06:27:38 PM »

MFJ specified 386 (silver oxide) or G12 (alkaline) cross references to:

Duracell: D301, D386, MS41H, LR43
Energizer: 301, 386, S41E, 186
Maxell: SR43SW, SR43W, SR43 (G12), LR43
Panasonic: SR43SW, SR43W, SR43 (G12), LR43
Renata: 386, LR43
Sony: SR43SW, SR43W, SR43 (G12), LR43
Toshiba: SR43SW, SR43W, SR43 (G12), LR43
Varta: V301, V386, V41HS, V12GA

Data sheets:
http://data.energizer.com/PDFs/386-301.pdf
http://www1.duracell.com/procell/pdf/watch%20_%20batteries_OS.pdf
http://www.renata.com/pdf/watch/DBLR43.pdf

The silver oxide 386 or SR43 cells (~120 mA-hr) should outlive the alkaline (~75 mA-hr) G12, 186, V12 or LR43 cells.
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