View Full Version : Neat Battery Trick for the Canonet!

Stu :)
04-03-2004, 07:15
I just discovered something really cool.

My Canonet QL17 uses these really annoying out-of-date and extremely hard to get 'mushroom' styled button batteries (PX 625).

Anyhow... today I discovered that the battery I put in at Christmas had gone flat. Which is a real pain in the butt, because only one camera shop I know stocks the PX 625 and they charge for it too! A rather hefty $25NZ per battery. Where as my new Bessa R uses the more current and easier to find LR44 (even the local gas station stocks them!), which costs around $5 to $8NZ for a strip pack of 10.

Cursing at the flat battery and dreading the trek across Auckland something occurred to me, that last battery they sold me was not a PX 625, but an LR44 with a collar attached to it. So out with the tool box, a quick tap with a 4lb. hammer and fine pointed hole punch, and the collar was off. I noticed that the inside of the collar was bevelled smooth, when the LR44 is placed into the collar the bevelled edge stops the LR44 at a certain point. When compared to a PX 625, the LR44 with collar has the same profile and fits into the Canonet perfectly.

So I did the normal 'short with a resistor and go make a coffee' trick. My Canonet QL17 now uses the same battery as my Bessa R. In my 15+ years of owning cameras, this is the first time I've owned two cameras at the same time that use the same battery.

So next time your PX 625 goes flat, have a closer look at your battery, it might just be a LR44 with that third party collar you can use again!

Stu :)

back alley
04-03-2004, 09:12
neat trick, i'll have to take a look at mine too!


Brian Sweeney
04-03-2004, 11:22

New Canonet owners, do not forget that Turning the Camera to Manual Operation (off of Auto) turns the battery off. Many older RF's rely on the resistance of the CDS cell with a lens cap over it to save the battery. I pull the battery from my Hi-Matic 9, but can leave it in the Canonet.

ALSO: The PX14, often overlooked in camera shows, is really two PX-13's put together. I bought a bunch from a dealer who asked "You have a camera that those go in? I always wondered what took them." "Yes", I replied, "My Nikon F's".

06-23-2004, 21:21
Originally posted by Stu :)
I just discovered something really cool.

So I did the normal 'short with a resistor and go make a coffee' trick

Stu :)


Am I missing something here. The "short with a resistor and go make coffee trick"? Please explain, if this is some way-cool trick that I have not heard of.

04-13-2006, 18:52
That is a good idea to use the collar from another battery. I have tried to shim a 1.4v air-cell hearing aid battery into my QL17 and so far have not been successful. Maybe I will get out my 4lb. hammer and give this idea a go.