Originally posted by TailboardRider I know this is an old thread, but I have this problem with a recently purchased used K50. Resetting the time and date is not a major problem. However, I have noticed that the main battery apparently discharges over a few days (from maintaining settings or trying to charge the internal battery?). At this point, should I try to replace the internal battery, clip the internal battery, make sure I always have a charged battery on hand, or remove the main battery when the camera isn't being used?
Advice from users more experienced is appreciated.
Your question should be in the K-30/K-50 thread.
Anyway:
Replacing the internal battery see
HERE
Also for which types of battery.
If you don't want to solder, then clipping the old one brings you the benefit that you can leave the main D-LI109 inside without it being sucked empty because the internal battery tries very hard to charge itself.
If you replace it, you can do the clipping method as well, this way you leave the two feet soldered on the mainboard. This makes it easier to solder the new battery
onto those two feet. You fix the new battery with bluetack (or epoxy) so it stays in place which makes soldering much easier.
I recommend the old style leaded solder, ideal is solder without flux and then flux/resin (colophony / kalifornia flux). If you have pure colophony, you can dilute it in alcool and then add an aspirin (no kidding). CAIG Rosin flux is ready made and excellent but expensive.
The reason for this ancient soldering method: You can apply solder without rosin much better, there is no rosin burning away but the rosin is applied in tiny amounts to the to be soldered parts. Makes life much easier. The tiny amount of lead for such a short work I find non-critical. But have a window open and a fan blowing air over the to be soldered parts into the direction of the window.