Usage Precautions: Battery 13Usage PrecautionsBatteryThis unit uses a rechargeable lithium-ion battery that uses its internal chemical reaction to generate electrical energy. This re-action is easily influenced by the ambient temperature and humidity, and the battery’s effective operating time is reduced asthe temperature rises or falls. In very low temperatures, the battery may last only 5 minutes.Protective circuitry functions if you use the battery where it is very hot and you will have to wait before you can use it again.Completely remove the battery. (The battery continues to be used even if you have turned the unit off.)The battery can over discharge if you leave it in the unit and it may become impossible to recharge it.Do not allow dust or foreign objects on the battery terminal.Also, if you drop the battery by mistake, make sure that the battery body and the terminal are not warped.Inserting a deformed battery into the unit or attaching it to the battery charger may cause damages on the unit or battery char-ger.This unit is shipped with the area of use unset. Before using the unit for the first time, refer to the included leaflet.The clock setting affects the management of recorded content and playback order. Before recording, set and confirm the year,month, day, time, and time zone settings.If the unit is left without an electric power supply for a long period of time (approximately 3 months), "BACKUP BATT EMPTY"may be displayed when the power is turned on. If that happens, set the date and time information because it has been initialized.(➝ “Setting the Year, Month, Day, and Time” page 25)Also charge the backup battery. (➝ “BACKUP BATT EMPTY” page 113)The following types of storage media can be used. See the specified pages for details. Recording and playback• P2 memory cards and microP2 memory cards (➝ “P2 Cards” page 26) Proxy recording and data storage• SD, SDHC, and SDXC memory cards (➝ “Using SD/SDHC/SDXC Memory Cards” page 29)Battery characteristicsRemove the battery after useTake proper care of the battery terminalBefore UseSetting the Area of Use (Frame Frequency and Other Settings)Always confirm the year, month, day, time, and time zone, and set as necessaryCompatible storage media