Nextar X4B X4B Hardware Manual - Page 11

Working conditions and precautions for the rechargeable battery, Charging the Battery Pack

Page 11 highlights

Power Supply Preparation Working conditions and precautions for the rechargeable battery  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 about five minutes later, the player will power OFF automatically. Charging the Battery Pack The battery must be charged by using the supplied adaptors. 11

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11
Working conditions and precautions for the rechargeable battery
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
about five minutes later, the player will power OFF automatically.
Charging the Battery Pack
The battery must be charged by using the supplied adaptors.
Power Supply
Preparation