If someone VOIDS THEIR WARRANTY and does the swap, please confirm that the battery size is the same. This is obviously not authorized by RICOH and you may brick your camera. Completely not recommended unless you’re a hardware hacker and want the challenge.
You will void your warranty if you take apart your camera. Your best option is to call RICOH support or go back to the store where you bought the camera from in the first place. The RICOH battery is not supposed to be changed by the end-user, only professional support centers.
If you attempt this, suggest you read this post first.
BTW, this article on the m15 shows that the DB-100 was used in the previous version of the camera.
Several people on this forum have taken the camera apart and put it back together again. No one that I know of has changed the battery.
If you get it working, please report back. I don’t recommend this unless this is a hobby for you or you are unable to take the camera back to the store.
Thanks to community member Iamme Accho for contributing this information. NOTE: the battery is not recommended right now.
Sleeping Beauty Revised with a replacement battery. No Ricoh DB-110 3.7V 1350mAh battery available. This is a Olympus Li-50b (3.7V 945mAh) compatible battery (3.7V 1800mAh). Don’t do it yet if you have a dead Theta. THIS BATTERY FEELS WARM powered off, hot powered on. May be the camera’s problem - exactly how it was before bricked. I will test it until battery depleted, then try a cautious recharge. I have another Li-50b compatible battery coming.
IMPORTANT: Battery got too hot and the test DID NOT WORK
I replaced 2 brands of Olympus Li-50B compatible batteries to my Theta S. They were 1650 and 1800mAh 3.7V and good fit into the Theta chamber. Both could power up yhe Theta and take pictures. In this regard I would say they worked. One problem is the situation compelled us to replace the DB-110 battery is likely to be a battery failure. In my case, the Theta became very hot and then could not be recharged- the camera just got frying hot. Upon installed the new battery, in both occasions, the new battery warmed up soon before power button was pressed. And after some time, it cooled down (battery discharging until exhausted). Trying to recharge it only caused it to heat up without charging progress. I would guess my Theta has burnt the chips or the insolation somewhere. To verify, a healthy Theta camera is required. But who will do such silly thing if it is working?
It’s still unknown if it will work on a healthy camera. In this case, the camera may have a problem that caused the battery to die.