Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
11-12-2012, 05:43 AM   #1
New Member

Join Date: May 2011
Location: London
Posts: 5
Pentax 645 Battery Drain

Hi all

I have an old school 645 in fairly decent condition, bought off ebay a couple of years ago. Have had no problems with it, except the batteries have recently started to drain if left in whilst not in use, to the point that I pretty much need a new set every time I use it... have taken to taking batteries out to conserve power whilst not in use... is this a common problem, and if so, any ideas on a potential solution?

Thanks very much

11-12-2012, 07:44 AM   #2
Giveaway winner!
MysteryOnion's Avatar

Join Date: Dec 2007
Location: beantown
Photos: Albums
Posts: 944
Maybe related, but not sure. In the 6X7 cameras are a series of switches that activate the shutter and turn on the magnet for the shutter. It could be that the "main shutter" circuit is not turning off and remains active even after the meter and displays are off. The 645 (first version) must have similar switches that I observed in the 6X7 and it could be that one of them is not disengaging.

Is the release button touchy when you press to shoot?
Any signs of being dropped or bumped hard?
11-12-2012, 05:01 PM   #3
Veteran Member

Join Date: Feb 2010
Location: Fowlmere, UK
Photos: Albums
Posts: 707
I had the P645 for some time and never ever experienced this, nor with the 645N. I do not think it is usual at all, rather something is wrong along the lines of the previous post
11-16-2012, 03:05 PM   #4
New Member

Join Date: May 2011
Location: London
Posts: 5
Original Poster
Thanks for your suggestion Mystery Onion... it hasn't been dropped or bumped since I've had it as far as I know... when you say "touchy" re release button when you press to shoot, do you mean does it have a kind of hair trigger so that one touch on the release button shoots the camera? It seems ok to me... depress half way-ish to actually shoot a frame...

Any other thoughts?


  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
batteries, camera, drain, medium format, pentax 645 battery, whilst
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
LX battery drain? SCADjacket Pentax Film SLR Discussion 5 09-27-2012 12:46 PM
Olympus film cameras: battery drain whojammyflip Non-Pentax Cameras: Canon, Nikon, etc. 5 09-01-2011 04:58 AM
Battery drain since camera repair Panache Pentax DSLR Discussion 14 12-31-2010 01:38 PM
K100 battery drain hiddenhallow Pentax DSLR Discussion 9 08-31-2010 03:14 PM
Fast Battery Drain in BG2 Grip rickn Pentax Camera and Field Accessories 4 10-29-2009 05:15 PM

All times are GMT -7. The time now is 11:35 AM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]