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Approaches to replace mercury px625 battery

What is mercury px625?

The PX625 (also referred to by other names such as PX13) is a small button-shaped 1.35volt mercury battery which great number of camera models were designed to use.

Before the manufacture of mercury batteries was banned, many cameras were designed to use them. Because mercury batteries produced a constant and reliable voltage, many cameras were built without any voltage regulation in the metering circuitry. Unless preventative measures are taken, use of other kinds of batteries gives erratic exposures and meter readings.

Brands and Cameras designed to use px625 battery

Manufacturer/Brand Model
Agfa Optima 500 Sensor, Selectronic, Selectronic S, Agfamatic 300/4000/4008/5008/6008, Optima 535/1035/5000/5008/6000/6008
Alpa 9d
Argus 270 Insta-Load
Bell & Howell FD35, Autoload 340/341, Auto Reflex Dial 35
Bronica C2, S2
Canon FT, FTb, FTbn, FT-QL, TX, TLb, EF, F1 (some), Ex, EX EE Auto, A35F, Demi 17, Demi EE 17, Canonet QL17/QL19/19E/25/19E, Canonet New QL17/New QL17L/New QL19/New 28/G-III 17/G-III 19
Chinon SLR, 1000EL pocket, CS, CXII
Dacora Rapid D101, D202, D404
Edixa LTL, 35MM, Prismat, Amica Auto,TL 1000
Exakta TL1000, RTL1000, Examat & Travemat meter finders
Fuji/Fujica 35FS, 35GP, V2
GAF Corporation L-14, L-17, L-CM, L-CS, Anscomatic 726, Autoset Cds
GAF Bernard Auto 35, Model 503, Viceroy 5000
Hanimex 35EE, 35SL, 120, 620, Compact A
Hasselblad Meter Prism Finder CdS
Kalimar K650, K431 Cds meter, K433 zone meter, Zanit 2000CTL
Keystone K609H, K610H, K616D, K164H, K615H, K1010 Auto
Kiev 60 TTL (2 each)
Kodak AG Retina IIF
Konica AutoReflex T4/TC/Autorex, Auto S/S1.6/S2/S261 meter, EE-Matic, EE-Matic Deluxe F/FM, c35/c35 Flashmatic
Kowa SE, SER, SET, SETR, SETR2, 6, 6 MM, Super 66
Leica CL, M5, Leicaflex SL/SL2/SL-MOT/SL2-MOT
Minolta SRT 100/101/200/201/202, SR 1/7/7V/100/102/200/201/202, AL-F, AL-E, Autopack 700, Himatic 7/7s/9/11
Minox 110S
Miranda Sensorex, Automex II/III, F, FM
Nikon F, FTn, FT, T, Tn, Nikkormat FT/FTn/FT2
Olympus 35 series: 35DC/35LC/35RC/35RD/35SC/35SP/35SPN/35UC, EED, Pen FT, FTL, M-1, OM-1, OM-1MD, OM-1n
J.C. Penny SLR2/SLR3
Petri FT, FTIII, F1X, Racer, Petriflex 7
Praktica TL, TL1000, Super TL/TL2/TL3, LTL, LTL3, MTL3, MTL5, Praktica 66 meter, Prakticamat
Ricoh Simplex, Simplex II, SLX 500, TLS 400/EE
Rollei 35, 35S, 35T, 35 Classic, A26, 126, XF35, Rolleiflex SL35, SL35M, SL26
Spiratone Spiraflex TTL
Topcon RE Super, Super DM, 135EE
Vivitar 35EE, 35EF, 35ES
Voigtländer VF101, VS1
Yashica MAT 124, MAT 124G, Y12, Y24, Half 14, Lynx 14/14E/5000, Ministar 700D, Penta J3/J4/J5/J7
Zeiss Ikon Contaflex 126/SLF, Contarex Super/Super BC, Icarex 35S/35CS, SL706
Zenit Zenit TTL, Zenit 16, Zenit 18, Zenit 19, Zenit , Zenit Avtomat, Zenit AM, Zenit APK

Approaches to replace mercury px625 battery

a. CRIS MR-9 adapter.

http://www.criscam.com/mercury_battery_adapters.php

Good: Uses Silver Oxide batteries SR-44. More available than other adapters.
Potential Bad: Expensive

b. PaulBG’s Adapter

http://www.paulbg.com/Nikon_F_meter_batteries.htm

Good: Cheaper. Uses Zinc Air batteries aka Hearing Aid battery.

Potential Bad: The battery will die every 3 months regardless of usage. It is cheap but you have to check on the battery.

c. DIY from old PX645 battery

Remove the centre piece of the PX645 battery leaving only the ring. Place a Zinc air battery in the centre and uses aluminum foil between the battery and ring.

http://www.kyphoto.com/classics/mercurybattery.html

4. these easiest way: wein cell px625

can easily get from amazon, antiquecamera.com, ebay and other online places. A genuine piece of wein cell usually costs around 6-7 US Dollars.

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