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Gossen Luna Pro - Mercury Battery Solution

PJ Clifford , Dec 07, 1999; 11:09 a.m.

For those of you that have a Gossen Luna Pro that takes the now hard to find PX625/PX13 1.35-volt mercury batteries, Gossen has an adapter that will solve the problem.

I called Bogen this morning and was advised that part number 4145 is an adapter that fits in the existing Luna Pro battery compartment that allows the use of 1.5-volt silver batteries and down-rates them to 1.35 volts to allow the Luna Pro to meter accurately. The price is $18.00 (without shipping and handling, of course) and comes with the appropriate silver batteries included. It is available from any Bogen dealer or direct from Bogen at:

Bogen Photo Corp. 565 East Crescent Ave. Ramsey, NJ 07446-0506 USA Phone: 201-818-9500

Especially with the batteries included, this appears to be one hell of a deal to "revive" a very good hand held meter. I have had mine since the 1970s and it has been like a rock.


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jeff Drew , Dec 07, 1999; 12:00 p.m.

In the less acceptable category, my son returned from Germany with several of the mercury type batteries for my meters. Many are still made & available overseas. The silly part is the packaging, by Varta, is all in English for the US market. Need an excuse to travel? I think my wife would be upset if I were to "go get a battery" and leave her behind, but sacrifices must be made! :-)

Christian Mani , Dec 07, 1999; 01:40 p.m.

I had Bogen do this 'upgrade' done to my Luna Pro last year and the meter works as fine as ever. keeps on ticking....

PJ Clifford , Dec 07, 1999; 03:21 p.m.

Christian: It may have been your experience that I read about in here that prompted me to call Bogen. I had the impression, however, that it was a modification to the Luna Pro that would require sending the unit to Bogen for the modification. It is not. It is an adapter that can be purchased directly from Bogen or a Bogen dealer and can be "installed" by the end user.

Jeff: Yeah, I knew about Varta, but my understanding is that even they have stop manufacturing the cells and all that is available is current stock on hand. When that is exhausted, that is it. Besides, the shipping of the transport media (me!) to/from Germany when I need a battery could get a bit pricey! *hehehe*

Terry Carraway , Dec 07, 1999; 03:32 p.m.

Varta stopped producing mercury cells early this year (1999), and AFAIK they were the last producer of them. There are still a good number in the distribution pipelines. Last June they were available in Toronto.

Todd Frederick , Dec 07, 1999; 09:10 p.m.

Christian Mani , Dec 08, 1999; 10:35 a.m.


Yes, it is an end-user adjustment. I had sent my meter and spot attachment into Bogen for a full cleaning and calibration, so I simply had them add the battery adapter while it was there. The same $18 charge applied.


Christian Mani

Dave Culver , Dec 08, 1999; 06:23 p.m.

This sounds almost exactly like the "MR9" adaptor available from CrisCam (www.criscam.com) for use in cameras whose meters used the 1.35 volt mercury oxide batteries (Olympus OM-1, Minolta SR-T 101, 102, etc.) The good news is that Bogen's price of $18 includes a Silver 76 cell, while CrisCam charges $30 just for the silly little MR9 adaptor. I wish I had learned about the Bogen alternative before recently spending $72 (including "packaging" and shipping) at CrisCam for two adaptors.

Allen Henderson , Dec 11, 1999; 09:11 p.m.

Have you tried Battries Plus or stores that sell hard to find batteries. I found mercury batteries for a 25 year old meter at a Batteries Plus store.

James Curione , Jan 18, 2000; 10:47 p.m.

I think the Bogen answer might the best alternative. I just tested the Varta V625 batteries that my local camera shop put into my 1970's Luna Pro. They rated 1.5 volt on a reliable battery tester that I have. I took them out immediately and sent my meter off to Bogen.

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