Nextar Q4-MD User Guide - Page 11
About Rechargeable Battery, Working conditions and precautions for the rechargeable battery,
UPC - 714129929912
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Power Supply Preparation About Rechargeable Battery Your portable GPS device comes with a built-in rechargeable battery. Charge the battery fully before initial use. Charging time is normally about 3.5 hours. A fully charged battery delivers about 2.5 hours of use. Working conditions and precautions for the rechargeable battery New batteries should be fully charged before initial use. Battery should only be used and charged when temperatures are between 32°-100°F. Maintain well-ventilated conditions around the product to avoid overheating. Don't put the product on a bed, sofa or anything that may block ventilation to the product. When the battery is weak, an indication menu will appear on the LCD screen and after a little while, the unit will power OFF automatically. Charging the rechargeable battery The battery must be charged by using the supplied adaptor. 11