Mini PTZ V1 strange behavior

[pitts15]

Camerafunction is normal. After restarting, it forgets the presets. In operation, it keeps the presets. What's this? What is the small battery on the mainboard for and what type is that

 

[udmkedr]

the battery is soldered. its just so not take off

 

[pitts15]

I know the hot end of a soldering iron but I wanted to know was what kind of battery is it. Or is it an akku? And why is it there? I have 3 spare-boards and the batteries have: 2.2Volt; 0.22Volt and 0.20Volt. Do they buffer the presets? or the parameters?
If I set new presets they will work until the camera is restartet. Then the older presets are activ, the new once forgotten. Any ideas?

 

[udmkedr]

Is it similar?

Nominal Voltage (V) 3
Nominal Capacity (mAh) 5
Diameter (mm) 6.8
Height (mm) 2.1

 

[pitts15]

Great. Exactly it is the same model. A Lithium Battery. OK now: what is this battery for? could that be a backup batterie for all parameters? And why do they have only 0,22 V. I will try to find this battery and replace it.

 

[pitts15]

correction it is a rechargeable battery