PROFEX II- quick change battery

David Martin · Post by **David Martin** » 15 Mar 2004 8:19 am

I was wondering if anyone else has a Profex II like mine. I have two, but this one I bought from someone on the Forum and checked the battery when I got it. The battery is a drop in type (like a watch battery- about the size of a nickel). It takes about 5 minutes to change. I don't know if it has been modified but my other Profex has the type that has to be soldered in.
It works great and changing the battery every couple of years to be sure will be no problem. I think they all should be made this way.
[This message was edited by David Martin on 15 March 2004 at 08:21 AM.][This message was edited by David Martin on 15 March 2004 at 09:17 AM.]

Bill Crook · Post by **Bill Crook** » 15 Mar 2004 2:42 pm

David...

Someone has done a "mod" on that "Profex II". What they did is take one of those silver dime looking battery and battery holder from some other device and put it in the "Profex II". I have thought of this myself but truefully don't see the need for it.

Ken Fox · Post by **Ken Fox** » 15 Mar 2004 6:01 pm

I have looked for a holder for the current style battery, no luck. I would be concerned that the type battery in there has the correct voltage, can handle the charge voltage the Profex can apply and has the propoer amphour rating. If so, it would be a good idea!

Was it an exact fit to the solder traces, or was it wired in place? This could be a winner.

David Martin · Post by **David Martin** » 16 Mar 2004 6:23 am

Bill and Ken,
Thanks for your reply. I had a feeling it was modified. I changed the battery when I got it and as I recall It was the same voltage as used in the Profex. I don't remember seeing any exposed wires and it was a very neat job (it looked right). The case and battery were very clean. I have used it constantly for 6 months with no problems at all. I found the battery where they sell batteries for cameras and such ($2.99)
Someone did a good job I think. So far so good. I bought this as a spare but it sounded so good I use it all the time.

Bill Crook · Post by **Bill Crook** » 16 Mar 2004 5:15 pm

Ken..........

The battery used in computers to keep the c-mos alive is a 3.volt device. Its about the size of a quarter and the holder for it will fit very nicely into the spot where the original battery is installed. If you look at the original battery, it is really 3 1.2volt cells in series,encased in a plastic wrapper.

While this is a thoughtful idea to ponder, I wouldn't go through the trouble to do it because in my experiences with silver-type cells,they have a tendency to to be short lived. The original type battries used in the "Profex II" will generally last 3-5 years. The quarter size 3 volt cells is about 6 to 8 months lifetime. By the time you add everything up,(cost of 5 or 6 battries,time to change it out,reload "Profex II") it's much easier and better to use the OEM type battery in this device.

I wouldn't do it.