How long does it take to charge Canon IXUS 105 camera for the first time?

Original charger, red light when charging; The electricity is full and the light is green.

The first charging 10 hour and 12 hour are the "old calendars" of previous nickel-cadmium battery charging. Because that battery has a strong memory effect, it should be "filled" and "remembered" for the first time to improve the efficiency of the battery. Modern lithium batteries have basically no memory effect. So no matter the first time or every time after, as long as the green light is on, it means that the battery is fully charged and should stop charging.

Supplementary answer: Canon camera has no memory card, and the camera will prompt "No memory card". When you press the shutter, the camera will prompt "No recording".