burkphoto wrote:
Modern cameras have rechargeable clock batteries built in. Many older models do have coin-cell Lithium batteries such as the CR-2032, CR-2024, CR-2016, etc., similar to the batteries in remote control entry fobs for cars. If your camera has a button cell/coin cell battery, it is usually behind a false wall in the main battery compartment. When I used older Canons, I changed them every two years. I never worried about losing settings.
If you leave the main battery out of the camera, the clock battery will drain completely over time. In that case, install a freshly charged main battery overnight, and it should be okay.
Most of these batteries last five to ten years in normal use. When it dies, it can be replaced by an authorized service center, but by then, you might want a new camera anyway.
Modern cameras have rechargeable clock batteries b... (
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This is good to know. Didn't know they get recharged from the main battery.