68
B
B.   Tips and Safety Guidelines for 
Lithium-Ion Batteries
Battery Tips
• Charge batteries in a room-temperature environment, which is generally between 68° F 
and 79° F (20° C and 26° C). Charging may be temporarily disabled if the battery 
temperature exceeds 113° F (60° C).
• If a battery exhibits significantly shorter runtime or discharge capacity compared to new, it 
may have reached the end of its reasonable lifetime; consider replacing it. 
• A battery that does not charge or exhibits excessive charging time may have reached the 
end of its life and may need to be replaced.
• All batteries degrade and lose charge capacity over time as a result of use or storage, 
and eventually need to be replaced.
• Batteries are best stored in a cool, dark, dry place. Avoid storage in direct sunlight and in 
vehicles parked outdoors.
• Batteries may get warm while charging and discharging; this is normal behavior for all 
batteries.
• Use the AC adapter and the USB cable that came with this device.
• Use the latest firmware; check for updates on a regular basis.
• Device performance and runtime are affected by workload or usage. Higher workloads or 
usage can lead to higher battery temperatures and faster battery power consumption.
• Streaming large amounts of data affects the power consumption and reduces the 
operating time of the battery.
General Battery Safety
• Stop using a battery if its case appears damaged, swollen, or compromised. Examples 
include, but are not limited to, leaking, odors, dents, corrosion, rust, cracks, swelling, 
melting, and scratches.
• Do not expose batteries to fire or other heat- generating environments.
• Do not place the battery or the device in areas that may get hot. Examples include, but 
are not limited to, on or near a space heater, cooking surface, cooking appliance, iron, 
radiator, or fireplace.