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We were given a D200 that is in otherwise spotless shape, but the battery won't stay connected. It will work perfectly at home, but as soon as you get into the field it stops.

I can get it to work most of the time by jamming a bit of paper under the door to force the battery up against the contacts. But as I say, this only works some of the time.

Does anyone have any more permanent solutions for this problem?

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This is a general answer rather than specific to the D200.

If possible obtain another battery that works OK in another camera.
Also, if possible, it may help to have access to a D200 that does not have this problem.

Try the 4 possible combinations of G (good) and F (faulty) for body and battery (GG GF FG FF), see how they compare and try to see what makes some work and some not. Also, you are starfing out with FF (Faulty body, faulty battery).
eg if GF works and FG (Faulty body, good battery) still doesn't then the issue is more likely to be with the body than the battery.

Look carefully at how the battery is intended to be retained and try to see what is wrong with the system. This may be due to wear or breakage of a latching part of due to dirt or other debris trapped in part of the system - either in the battery of the camera.

I have seen batteries which have accumulated an apparently minor amount of "debris" in slots in the battery-body. Cleaning this out has restored correct action. A wooden toothpick (or several) is often a useful cleaning aid as it will not damage hard plastic or most battery contacts if used sensibly.

It's possible that there are spring loaded contacts that the battery is pressed home against and that these have lost their "set" and are more depressed than they should be. Springs can often be "restretched" but, this should be done if at all by someone who has "some clue" about the process.

  • We have three batteries, they all have the same problem. The problem may the the middle pin of the three contacts being "soft", but I don't have another D200 I can compare with. – Maury Markowitz Nov 13 '14 at 12:09
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    @MauryMarkowitz if the contact is "soft" and the battery is against a hard stop then pushing in the battery harder will make only a very small difference to separation. The battery is an EN-EL3E - same as in my D700. Could you try CAREFULLY adding a conductive strip to the middle contact using eg brass shim. You'd not want it to come off and short the battery! IF this works it gives you confidence that the problem lies in the contacts and you can possibly address by "careful and competent manipulation" – Russell McMahon Nov 13 '14 at 20:09
  • I will give this a try, I hadn't consider that. – Maury Markowitz Nov 14 '14 at 14:08
  • Another possible solution: Try if a battery grip (bought used, off brand, whatever) will give satisfactory contact... – rackandboneman Feb 4 at 20:41

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