In fact, in addition to providing primary power to the camera batteries, all the digital camera is also a small battery, the camera built-in clock is used to provide energy. As we all know, all the images have been captured will not be lost because of battery replacement, as they are stored in the same memory card. But for the camera, if not the temporary spare battery, camera built-in data and time will be lost.
Most digital cameras use the user manual is recommended when the camera is not in use for a long time, you should remove the battery from the camera store.
Battery backup camera There are two cases to regain power: Some camera models replaceable backup battery is a circular battery, so that it can also be charged each time. The use of such cameras at each replacement of the main battery, will display a warning or a camera you can see you will be prompted to re-login time data; same thing will not be in use appears on the camera replacement battery. This camera has a small built-in rechargeable battery or a capacitor, it can be the main battery to charge.
When the camera is used in such a permanent built-in backup battery, there will be a typical problem, that is, when the camera is not used for a long time, but mainly for energy batteries can also be removed, the backup battery will often show their battery charge is insufficient to maintain the camera's clock system. Moreover, if the main battery into the energy supply for a short time, is likely to make the built-in backup battery is insufficiently charged. I'm sure you noticed following these situations: You will be fully charged battery into the camera, immediately a large number of continuous shooting images, then had to charge less than the primary energy supply battery. Once you remove the battery, the camera will lose the current time and data, such a situation is because the spare battery charging time is too short, it is not from the main battery to get enough power to keep the camera's time and data .
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