lee_shively Posted August 12, 2004 Share Posted August 12, 2004 I just ordered a used Pentax 645 and a couple of lenses. I have noted in a couple of postings that the lithium battery (CR 1220?) can be user replaced although the instruction book says to send it back to Pentax to have this done. Since I have no way to know how old the battery is that is in the camera, I thought I would replace it and start fresh. Other than being sure the camera is off, are there any special procedures involved? I'm sure I can remove and replace the battery but I don't want to fry the circuits or do something that would require reprogramming. Link to comment Share on other sites More sharing options...
fred_mueggelhopper Posted August 12, 2004 Share Posted August 12, 2004 The lithium battery in my P645 was last replaced in 1992. It is still working just fine. You can replace it yourself using a small adjustable spanner wrench. Link to comment Share on other sites More sharing options...
xato Posted August 13, 2004 Share Posted August 13, 2004 I think the initial cautions on replacement were due to the rarity (at that time) of the 1220 battery. It holds the ISO # and frame number when you take out the 6 AAs, which by the way will last you for many many rolls. If the display is blank when you turn the camera off, then (I surmise) the lithium battery is dead. WK Link to comment Share on other sites More sharing options...
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