Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
05-05-2011, 07:37 AM   #1
Senior Member




Join Date: Jan 2011
Location: Kansas City
Posts: 106
Battery help - Pentax SP500

I need a replacement battery does anyone know what current battery is available to replace the 1.3V mercury PX-400.

Thnaks

05-05-2011, 07:51 AM   #2
Veteran Member
Nesster's Avatar

Join Date: Oct 2006
Location: NJ USA
Photos: Gallery
Posts: 13,047
Google is your friend
Asahi Pentax Spotmatic SP500 - Photoethnography.com's Classic Camera DB
QuoteQuote:
Availability of batteries for the Spotmatic is better than other cameras of the era because the Asahi engineers built in a bridge circuit in the metering which makes it battery voltage independent. This means you can use the original 1.35 mercury PX400 battery, or a 1.5V silver-oxide replacement without problems. An exact fit PX400S is available, or you can use a #392 cell with a small rubber-O ring (purchasable at any fine home repair center or DIY store) as a spacer. I believe a #397 also fits as well.
Camera Batteries - a complete chart - Photoethnography.com's Classic Camera DB
QuoteQuote:
1) The 1.55v silver oxide Energizer E387S is an exact fit. This is also sold as the Radio Shack 387S (RSU #11608452), but is a special RSU order. PhotoBattery.com has the S400PX as a replacement.

2) Both of the above are 1.55v silver oxide. They work with the Spotmatic which has voltage regulating bridge circuitry, but other older cameras may be more problematic.

3) CRIS H-B Adaptor and silver 377 batteries. The CRIS adaptor has a diode to take it down to the proper voltage, although the Spotmatic doesn't need the lower voltage.

4) Wein zinc-air cell have a stable voltage over their life and are thus suited to many older cameras. The disadvantage is that these only last a few months. Sources for Wein cells noted below.

I bought a bunch of Excell PX400S batteries via ebay a few years ago and they work well, though a couple ended up leaking in their package before I got around to needing them... so I guess I'm saying you don't need to accumulate a large store of them.

I'm thinking I'll go with the Energizer E387S next time - you can get these from many sources, e.g. Amazon, where 1 goes for $4.20 and 5 for $17.99
05-16-2011, 02:41 PM   #3
New Member




Join Date: May 2011
Posts: 2
I got the same one and was happy with it
05-16-2011, 05:40 PM   #4
Veteran Member
PGillin's Avatar

Join Date: Apr 2010
Location: South Florida, USA
Photos: Albums
Posts: 336
As above, the bridge circuit means that any 1.5v that fits, works.
Pentax was very wise to use a bridge circuit.

05-16-2011, 11:01 PM   #5
Site Supporter




Join Date: May 2010
Location: melbourne
Posts: 934
Is the Energizer 387S still being made?......I know there's a bit of stock around...but how old is it?
Cheers, Pickles.
05-29-2011, 11:37 PM   #6
Veteran Member




Join Date: Jun 2010
Location: Marina CA
Posts: 300
I have had success with the #395 watch battery. I found it is best to use fingernail polish around the raised area inside the battery cap to avoid a short that kills the battery.
06-01-2011, 05:18 AM   #7
New Member




Join Date: Jun 2011
Posts: 7
I've had success with basic small 1.5volt button cells in my SP1000. Again bridge circuit to the rescue on these cameras. Good luck!
Reply

Bookmarks
  • 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!
battery
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Shortsighted SP500 User Turves Welcomes and Introductions 5 03-21-2011 12:26 PM
Pentax SP500 Ole Pentax Film SLR Discussion 1 01-25-2011 05:56 PM
For Sale - Sold: Original Pentax BG2 Battery grip w/ or W/O OEM Pentax Battery jjdgti Sold Items 4 01-19-2011 07:25 PM
For Sale - Sold: Pentax D-BG2 Battery Grip in Like New condition + Generic Battery jjdgti Sold Items 2 07-15-2010 06:06 PM
Pentax sp500 Flash recomendations. SliqueRICK Pentax Film SLR Discussion 3 05-18-2009 06:45 AM



All times are GMT -7. The time now is 09:46 PM. | See also: NikonForums.com, 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?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top